2.8×10= 0.7×0.8= 0.04×20= 5.6+0.4=
4.7+2.3= 4.5×2= 6.9－2.5= 7.2×0.8=
6×3.4= 0.62－0.32= 1.4×0.5= 0.75×100=
0.02×0.5= 3.6×0.3= 6.3÷7= 5.6×100=
0.75÷0.25= 0.125×8= 4.8÷0.3= 0.86÷2=
0.56÷28= 0.36÷0.4= 0.64÷0.8= 0.7×9=
3.6÷24= 0.8×1.1= 7.2+12.8= 46.7－3.8=
12.8÷4= 5.2÷13= 12.5÷5= 1.64+4.1=
10÷20= 24÷15= 8.65×10= 0.35×0.6=
3.08×0.01= 4.95×1000= 6.9×0.1= 0.4×0.5=
2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2=
4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8=
0. 56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=
7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8=
1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=
0.22×102= 9.6÷0.8= 5×0.24= 4.5－0.05=
3.9÷0.13 16.5÷0.5= 5×0.12= 24×0.5=
4.8×0.5= 2.8＋4.2= 0.84÷2.1= 5÷0.25=
7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=
0.56÷0.8= 7.4－2.8= 0.18÷0.2= 0.16÷8=
4.5×0.02= 8＋7.2= 1.2×30= 0.012×0.2=
7.3×0.3= 0÷6= 3.6÷0.12= 7.8÷0.6=
2÷5= 4.5＋5= 0.3÷0.6= 0.96÷0.2=
10.5×0.4= 7.3＋0.27= 8×0.125= 0.54÷0.6=
0.61＋0.39= 0.56÷28= 10÷20= 4.08÷0.4=
10－9.4= 0.8×0.11= 7.2＋12.8= 5.6÷0.01=
2.3×100= 0.75×100= 0.108÷2= 10.8÷9=
7.8÷0.01= 5.4÷0.6= 3÷5= 7×0.62=
12÷0.5= 5.2×0.4= 12.2÷0.2= 5.6÷100=
0.41＋3.7= 0.02×0.5= 7.2－0.8= 1.4×0.5=
84÷0.21= 0.75÷0.25= 2.5×16= 0.108÷2=
1.75＋32.5= 16－5.07= 5.2÷13= 1.64÷41=
1.02×0.2= 0.26×0.3= 8.4×0.02= 1.2×6=
0.8×0.05= 12.6÷0.03= 8.71÷0.1= 21÷0.21=
0.8×0.13= 0.34÷17= 8.08÷0.4= 0.5×2.2=
1.24×4= 3.27＋0.63= 5.02×0.3= 0.3×0.5=
5.6÷7= 72÷ 7.2= 0.7÷0.35= 0.7÷1.4
0.48÷0.04= 1.25÷2.5= 5.5＋5.5= 16.8÷8=
0.54＋2.2= 3.5－0.05= 2÷0.02= 0.25×40=
1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=
46.5＋52.5= 0.45×102= 1.25×88= 2.64＋3.85＋1.54=
8×1.25= 7÷3.5= 4.2÷0.7÷6= 0.4×8.6×25=
0.27÷0.3= 2.5×101= 0.65×101－0.65= 2.6×7÷2.6×7=
0.02×0.5= 3.6×0.3= 6.3÷7= 5.6×100=
7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=
1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=
2.5×2= 0.5×10= 0.6×8= 2.1×2=
0.61＋0.39= 0.56÷28= 10÷20= 4.08÷0.4=
1.2×0.3 = 6.6÷1.1 = 4.9÷7= 0÷0.48=
94 × 8 = (2) 57 × 6 = (3) 9 × 67 =
(4) 26 × 9 = (5) 41 × 9 = (6) 57 × 3 =
(7) 7 × 79 = (8) 62 × 5 = (9) 21 × 1 =
(10) 3 × 57 = (11) 5 × 84 = (12) 8 × 26 =
(13) 5 × 67 = (14) 37 × 4 = (15) 8 × 98 =
(16) 6 × 24 = (17) 98 × 5 = (18) 12 × 2 =
(19) 9 × 75 = (20) 68 × 2 =
四年级几百几十数乘一位数
(1) 4 × 30 = (2) 100 × 4 = (3) 700 × 5 =
(4) 9 × 800 = (5) 8 × 80 = (6) 5 × 200 =
(7) 6 × 300 = (8) 2 × 600 = (9) 300 × 9 =
(10) 2 × 400 = (11) 4 × 50 = (12) 3 × 20 =
(13) 60 × 1 = (14) 7 × 600 = (15) 5 × 90 =
(16) 20 × 1 = (17) 90 × 3 = (18) 9 × 300 =
(19) 2 × 100 = (20) 90 × 6 =
四年级小数的加法和减法
(1) 7.64 ＋ 6.42 ＝ (2) 9.31 ＋ 3.31 ＝ (3) 1.44 ＋ 1.02 ＝
(4) 3.42 - 2.19 ＝ (5) 8.13 - 7.79 ＝ (6) 8.96 - 5.27 ＝
(7) 7.37 ＋ 6.17 ＝ (8) 3.77 - 3.00 ＝ (9) 2.10 ＋ 2.34 ＝
(10) 1.48 ＋ 4.54 ＝ (11) 7.69 ＋ 9.31 ＝ (12) 7.83 ＋ 1.96 ＝
(13) 7.45 - 5.77 ＝ (14) 8.98 - 7.83 ＝ (15) 3.08 ＋ 9.01 ＝
(16) 9.17 ＋ 4.62 ＝ (17) 3.79 ＋ 3.20 ＝ (18) 9.51 - 8.59 ＝
(19) 5.64 - 2.98 ＝ (20) 9.86 - 8.20 ＝
四年级两位数乘三位数
(1) 624 × 17 ＝ (2) 15 × 914 ＝ (3) 422 × 74 ＝
(4) 894 × 45 ＝ (5) 103 × 80 ＝ (6) 445 × 32 ＝
(7) 49 × 958 ＝ (8) 212 × 25 ＝ (9) 21 × 498 ＝
(10) 80 × 857 ＝ (11) 980 × 69 ＝ (12) 371 × 16 ＝
(13) 70 × 569 ＝ (14) 53 × 223 ＝ (15) 36 × 499 ＝
(16) 516 × 47 ＝ (17) 37 × 438 ＝ (18) 840 × 78 ＝
(19) 918 × 62 ＝ (20) 946 × 80 ＝
四年级整十数除整十数
(1) 20 ÷ 10 ＝ (2) 90 ÷ 10 ＝ (3) 30 ÷ 10 ＝
(4) 60 ÷ 10 ＝ (5) 90 ÷ 30 ＝ (6) 60 ÷ 20 ＝
(7) 40 ÷ 10 ＝ (8) 80 ÷ 20 ＝ (9) 80 ÷ 10 ＝
(10) 50 ÷ 10 ＝ (11) 40 ÷ 20 ＝ (12) 80 ÷ 40 ＝
(13) 70 ÷ 10 ＝ (14) 60 ÷ 30 ＝
四年级整十数除几百几十数
(1) 920 ÷ 10 ＝ (2) 180 ÷ 90 ＝ (3) 900 ÷ 20 ＝
(4) 420 ÷ 10 ＝ (5) 540 ÷ 30 ＝ (6) 390 ÷ 30 ＝
(7) 520 ÷ 10 ＝ (8) 330 ÷ 10 ＝ (9) 840 ÷ 20 ＝
(10) 330 ÷ 30 ＝ (11) 100 ÷ 20 ＝ (12) 160 ÷ 20 ＝
(13) 270 ÷ 30 ＝ (14) 510 ÷ 10 ＝ (15) 700 ÷ 10 ＝
(16) 690 ÷ 30 ＝ (17) 440 ÷ 40 ＝ (18) 520 ÷ 40 ＝
(19) 420 ÷ 70 ＝ (20) 720 ÷ 10 ＝
4= 12.8÷0.04= 1.6= 0.6×7= 0.61＋0.04= 0÷1.8= 5.3= 6.3= 0.24×4= 3.08×0. 56÷0.1= 10÷20= 24÷15= 8.2×0.8×0.5= 16.39= 0.65= 2.5×0.9÷0.1= 21÷0.25= 7.25÷0.8÷0.01= 5.108÷2= 10.08÷0.8= 12.8= 0.4－2.75×100= 0.125×8= 4.3×0.5= 5.7÷0.01= 4.5= 7.61＋0.6= 0.2×0.7－3.75×100= 0.2= 5.7÷1.01= 5.8= 0.6×0.7= 0.18÷0.65÷0.71÷0.8= 10.1= 0.63= 5.56÷28= 0.6= 3.32= 1.02×0.1= 5÷0.2÷5= 7×0.2= 7.9÷0.07= 5.28×0.4÷0.22×102= 9.4×8.3= 4.1×2= 0.5= 5.27＋0.36÷0.1= 0.8= 6×3.3= 2.5×2.6÷0.12= 24×0.04×20= 5.8= 3.8= 0.03= 8.05= 2÷0.13= 7.12= 7.6÷1.1= 46.4×0.56÷28= 10÷20= 4.48÷0.2= 0.4×0.8÷0.6÷24= 0.5= 5.75＋32.5×101= 0.39= 0.35= 0.1= 2.6×25= 0.02= 1.25÷2.6= 0.5×10= 0.86÷2= 0.2－0.54＋2.2= 0.05= 3.2＋12.3＋0.25= 7÷3.2÷5= 7×0.9－2.012×0.8÷4= 5.5= 7.5= 3.54÷0.4= 0.4= 1.65×10= 0.7×0.25×40= 1.4= 7.1= 0.34÷17= 8.25= 2.9= 9.5= 5×0.4= 10－9.5= 3.3×0.4= 4.6+0.75÷0.4÷0.8×1.7÷6= 0.3÷7= 5.3×100= 0.5＋5= 0.2÷0.2= 10.3= 0÷6= 3.5×0.108÷2= 4.8×0.24= 4.6÷0.64＋3.1 = 4.32÷0.5= 0.125= 0.6= 3.5= 2.13= 0.25÷0.5×16= 0.5×0.64÷41= 1.8÷8= 0.6÷0.96÷0.64÷0.3= 6.01= 2.8÷9= 9.8= 12.7= 0.5÷5= 1.1= 7.5= 73.25×88= 2.62= 0.16÷8= 4.1= 3.2÷13= 12.6÷7= 72÷ 7.27÷0.01×0.2= 1.8×0.6= 0.3÷0.6= 3÷5= 7×0.02×0.8= 7.5×2= 6.5＋5.2÷0.54= 8×1.21= 0.6×8= 2.2= 3.5= 4.2×30= 0.6÷0.27= 8×0.05= 12.8×0.62= 1.9×0.4= 0.2×0.02×0.25= 0.5= 1.8= 12.325×100= 2.8= 5×0.41＋3.02= 8＋7.7= 0.26×0.02= 0.4= 0.35×0.5×8= 0.8= 46.3÷7= 5.4÷0.6= 3.5÷0.4×0.3 = 6.7×9= 3.2= 1.56÷0.1= 0.8= 1÷2.65×101－0.5= 2.9÷7= 0÷0.02×0.2÷0.02×0.2= 0.11= 7.4= 0.8÷9= 7.8÷0.45×102= 1.08÷0.62－0.7+2.95÷0.6÷100= 0.6×7÷2.5×0.56÷28= 10÷20= 4.8＋4.6×100= 0.4×0.25×0.2÷13= 1.5＋52.13 16.3= 0.6÷0.21= 0.5×0.95×1000= 6.4= 1.32÷0.8= 1.6= 2÷5= 4.5－0.2+12.5= 73.5×2= 0.5= 16－5.64+4.5×0.3= 8.01= 5.125×4= 3.2×0.108÷2= 1.25×0.8÷0.5= 4.75÷0.4 0.6÷0.6×100= 7.5－0.4÷0.84÷2.6×0.85＋1.8×10= 0.2= 0.2×6= 0.5= 0.5= 84÷02.08÷0.8= 0.62= 12÷0
我还没做到那么后面 SORRY 我才做到39页累 对不起啦 不能帮你了..
解：
78+79+80
=80-2+80-1+80
=80+80+80-1-2
=240-3
=237
1)2.9 × 0.5 ＝ 答案:1.45 (2)5.9 × 0.2 ＝ 答案:1.18 (3)3.6 × 7 ＝ 答案:25.2 (4)4.3 × 0.3 ＝ 答案:1.29 (5)5.9 × 9 ＝ 答案:53.1 (6)9.4 × 9 ＝ 答案:84.6 (7)7.5 × 6 ＝ 答案:45 (8)1.3 × 3 ＝ 答案:3.9 (9)3.8 × 7 ＝ 答案:26.6 (10)4.7 × 5 ＝ 答案:23.5 (11)5.2 × 7 ＝ 答案:36.4 (12)2.3 × 2 ＝ 答案:4.6 (13)6.8 × 7 ＝ 答案:47.6 (14)6.7 × 0.3 ＝ 答案:2.01 (15)7.5 × 7 ＝ 答案:52.5 (16)7.1 × 0.7 ＝ 答案:4.97 (17)6.6 × 2 ＝ 答案:13.2 (18)3.5 × 0.2 ＝ 答案:0.7 (19)3.7 × 0.3 ＝ 答案:1.11 (20)4 × 0.3 ＝ 答案:1.2 (21)9.2 × 9 ＝ 答案:82.8 (22)6.1 × 9 ＝ 答案:54.9 (23)6.8 × 5 ＝ 答案:34 (24)4.8 × 4 ＝ 答案:19.2 (25)4.1 × 2 ＝ 答案:8.2 (26)6.4 × 0.4 ＝ 答案:2.56 (27)9.6 × 7 ＝ 答案:67.2 (28)1.9 × 0.8 ＝ 答案:1.52 (29)4.2 × 0.3 ＝ 答案:1.26 (30)1.9 × 0.8 ＝ 答案:1.52 (31)8.7 × 0.4 ＝ 答案:3.48 (32)2.6 × 7 ＝ 答案:18.2 (33)2.1 × 3 ＝ 答案:6.3 (34)1.6 × 2 ＝ 答案:3.2 (35)5.3 × 3 ＝ 答案:15.9 (36)8.5 × 9 ＝ 答案:76.5 (37)6.9 × 0.7 ＝ 答案:4.83 (38)6.6 × 0.4 ＝ 答案:2.64 (39)4.3 × 8 ＝ 答案:34.4 (40)8.2 × 3 ＝ 答案:24.6 (41)8.4 × 6 ＝ 答案:50.4 (42)2 × 6 ＝ 答案:12 (43)8.7 × 0.3 ＝ 答案:2.61 (44)3.2 × 0.5 ＝ 答案:1.6 (45)8.5 × 0.9 ＝ 答案:7.65 (46)7.1 × 0.7 ＝ 答案:4.97 (47)7.1 × 6 ＝ 答案:42.6 (48)7.4 × 0.5 ＝ 答案:3.7 (49)9.6 × 3 ＝ 答案:28.8 (50)8.4 × 8 ＝ 答案:67.2 (51)2.5 × 4 ＝ 答案:10 (52)1.3 × 3 ＝ 答案:3.9 (53)8 × 0.4 ＝ 答案:3.2 (54)7.8 × 9 ＝ 答案:70.2 (55)6 × 0.5 ＝ 答案:3 (56)7.7 × 8 ＝ 答案:61.6 (57)9.9 × 0.7 ＝ 答案:6.93 (58)5.4 × 2 ＝ 答案:10.8 (59)5.1 × 2 ＝ 答案:10.2 (60)4.7 × 3 ＝ 答案:14.1 (61)1.2 × 0.2 ＝ 答案:0.24 (62)5.3 × 0.2 ＝ 答案:1.06 (63)2.7 × 8 ＝ 答案:21.6 (64)2 × 9 ＝ 答案:18 (65)9.6 × 9 ＝ 答案:86.4 (66)5.4 × 3 ＝ 答案:16.2 (67)9.3 × 3 ＝ 答案:27.9 (68)5.5 × 0.8 ＝ 答案:4.4 (69)7.4 × 0.7 ＝ 答案:5.18 (70)3.4 × 0.6 ＝ 答案:2.04 (71)4.5 × 0.4 ＝ 答案:1.8 (72)3.8 × 7 ＝ 答案:26.6 (73)4.7 × 0.2 ＝ 答案:0.94 (74)1.5 × 6 ＝ 答案:9 (75)8 × 0.9 ＝ 答案:7.2 (76)9.2 × 0.6 ＝ 答案:5.52 (77)2.4 × 9 ＝ 答案:21.6 (78)1.8 × 5 ＝ 答案:9 (79)8.9 × 0.6 ＝ 答案:5.34 (80)3.2 × 0.8 ＝ 答案:2.56 (81)9.7 × 9 ＝ 答案:87.3 (82)6 × 7 ＝ 答案:42 (83)1.6 × 0.7 ＝ 答案:1.12 (84)6.3 × 2 ＝ 答案:12.6 (85)7.1 × 0.8 ＝ 答案:5.68 (86)5.2 × 7 ＝ 答案:36.4 (87)3.9 × 0.8 ＝ 答案:3.12 (88)9.9 × 0.2 ＝ 答案:1.98 (89)2.4 × 0.4 ＝ 答案:0.96 (90)3.5 × 5 ＝ 答案:17.5 (91)7.7 × 3 ＝ 答案:23.1 (92)9.5 × 0.2 ＝ 答案:1.9 (93)7.8 × 0.3 ＝ 答案:2.34 (94)3.4 × 8 ＝ 答案:27.2 (95)1.3 × 0.6 ＝ 答案:0.78 (96)9 × 0.5 ＝ 答案:4.5 (97)3.5 × 0.5 ＝ 答案:1.75 (98)3.4 × 9 ＝ 答案:30.6 (99)3.4 × 0.9 ＝ 答案:3.06 (100)6.5 × 0.5 ＝ 答案:3.25 1)7.4 × 6 ＝ 答案:44.4 (2)2.3 × 5 ＝ 答案:11.5 (3)5.1 × 0.4 ＝ 答案:2.04 (4)9.6 × 4 ＝ 答案:38.4 (5)5.4 × 5 ＝ 答案:27 (6)1.5 × 0.8 ＝ 答案:1.2 (7)9.4 × 2 ＝ 答案:18.8 (8)1.6 × 0.8 ＝ 答案:1.28 (9)7.5 × 0.7 ＝ 答案:5.25 (10)3.7 × 9 ＝ 答案:33.3 (11)1.8 × 0.6 ＝ 答案:1.08 (12)3.5 × 7 ＝ 答案:24.5 (13)9.3 × 4 ＝ 答案:37.2 (14)2.7 × 0.7 ＝ 答案:1.89 (15)5.2 × 7 ＝ 答案:36.4 (16)3.8 × 0.2 ＝ 答案:0.76 (17)1.2 × 0.9 ＝ 答案:1.08 (18)6.1 × 7 ＝ 答案:42.7 (19)3.8 × 0.7 ＝ 答案:2.66 (20)1.6 × 5 ＝ 答案:8 (21)5.9 × 0.3 ＝ 答案:1.77 (22)9 × 9 ＝ 答案:81 (23)7.1 × 0.3 ＝ 答案:2.13 (24)9.7 × 2 ＝ 答案:19.4 (25)5.8 × 0.8 ＝ 答案:4.64 (26)1.7 × 6 ＝ 答案:10.2 (27)9.6 × 0.5 ＝ 答案:4.8 (28)1.8 × 4 ＝ 答案:7.2 (29)4.3 × 0.6 ＝ 答案:2.58 (30)1.3 × 9 ＝ 答案:11.7 (31)2.9 × 8 ＝ 答案:23.2 (32)5.6 × 7 ＝ 答案:39.2 (33)5.3 × 0.6 ＝ 答案:3.18 (34)5.4 × 0.7 ＝ 答案:3.78 (35)5.3 × 0.2 ＝ 答案:1.06 (36)8.3 × 2 ＝ 答案:16.6 (37)9.5 × 3 ＝ 答案:28.5 (38)7.3 × 2 ＝ 答案:14.6 (39)2 × 0.5 ＝ 答案:1 (40)5.2 × 0.6 ＝ 答案:3.12 (41)9.7 × 7 ＝ 答案:67.9 (42)6.1 × 8 ＝ 答案:48.8 (43)6.7 × 0.2 ＝ 答案:1.34 (44)8.6 × 6 ＝ 答案:51.6 (45)3.1 × 0.5 ＝ 答案:1.55 (46)8.2 × 6 ＝ 答案:49.2 (47)1.5 × 6 ＝ 答案:9 (48)8.4 × 2 ＝ 答案:16.8 (49)1.3 × 6 ＝ 答案:7.8 (50)8.9 × 0.5 ＝ 答案:4.45 (51)6.7 × 2 ＝ 答案:13.4 (52)5.4 × 6 ＝ 答案:32.4 (53)6.3 × 9 ＝ 答案:56.7 (54)6.4 × 3 ＝ 答案:19.2 (55)8.5 × 0.2 ＝ 答案:1.7 (56)1.5 × 0.5 ＝ 答案:0.75 (57)3 × 0.4 ＝ 答案:1.2 (58)6.8 × 5 ＝ 答案:34 (59)8.7 × 0.3 ＝ 答案:2.61 (60)5.6 × 6 ＝ 答案:33.6 (61)5.5 × 0.7 ＝ 答案:3.85 (62)9.6 × 0.3 ＝ 答案:2.88 (63)9.6 × 7 ＝ 答案:67.2 (64)8.3 × 3 ＝ 答案:24.9 (65)9.5 × 0.5 ＝ 答案:4.75 (66)5.5 × 9 ＝ 答案:49.5 (67)1.9 × 9 ＝ 答案:17.1 (68)2.2 × 7 ＝ 答案:15.4 (69)3.8 × 0.9 ＝ 答案:3.42 (70)1.8 × 0.7 ＝ 答案:1.26 (71)4.6 × 0.2 ＝ 答案:0.92 (72)1.3 × 0.2 ＝ 答案:0.26 (73)4.3 × 0.9 ＝ 答案:3.87 (74)1.4 × 2 ＝ 答案:2.8 (75)7 × 5 ＝ 答案:35 (76)2.5 × 7 ＝ 答案:17.5 (77)6.4 × 0.4 ＝ 答案:2.56 (78)6.3 × 5 ＝ 答案:31.5 (79)3.1 × 4 ＝ 答案:12.4 (80)5.8 × 0.7 ＝ 答案:4.06 (81)1.2 × 8 ＝ 答案:9.6 (82)6.5 × 0.5 ＝ 答案:3.25 (83)3.9 × 0.9 ＝ 答案:3.51 (84)9.3 × 3 ＝ 答案:27.9 (85)2 × 2 ＝ 答案:4 (86)3.7 × 5 ＝ 答案:18.5 (87)1.1 × 3 ＝ 答案:3.3 (88)6.5 × 5 ＝ 答案:32.5 (89)2.7 × 0.8 ＝ 答案:2.16 (90)8.4 × 8 ＝ 答案:67.2 (91)4.2 × 0.8 ＝ 答案:3.36 (92)6.9 × 2 ＝ 答案:13.8 (93)6.6 × 2 ＝ 答案:13.2 (94)9.5 × 0.8 ＝ 答案:7.6 (95)6.6 × 0.7 ＝ 答案:4.62 (96)1.7 × 0.5 ＝ 答案:0.85 (97)6.9 × 9 ＝ 答案:62.1 (98)8.4 × 6 ＝ 答案:50.4 (99)9.4 × 0.5 ＝ 答案:4.7 (100)8.4 × 0.5 ＝ 答案:4.2 (1)5.6 × 8 ＝ 答案:44.8 (2)3.9 × 5 ＝ 答案:19.5 (3)5.4 × 0.4 ＝ 答案:2.16 (4)7.3 × 0.2 ＝ 答案:1.46 (5)9.4 × 8 ＝ 答案:75.2 (6)3.8 × 0.3 ＝ 答案:1.14 (7)8.6 × 0.4 ＝ 答案:3.44 (8)7.3 × 4 ＝ 答案:29.2 (9)4.8 × 0.4 ＝ 答案:1.92 (10)1.3 × 4 ＝ 答案:5.2 (11)7.3 × 8 ＝ 答案:58.4 (12)8 × 4 ＝ 答案:32 (13)3.2 × 6 ＝ 答案:19.2 (14)4.7 × 0.3 ＝ 答案:1.41 (15)4.6 × 0.9 ＝ 答案:4.14 (16)9.9 × 4 ＝ 答案:39.6 (17)8.2 × 0.5 ＝ 答案:4.1 (18)8.2 × 0.5 ＝ 答案:4.1 (19)5 × 0.8 ＝ 答案:4 (20)5.7 × 9 ＝ 答案:51.3 (21)3.9 × 5 ＝ 答案:19.5 (22)7.3 × 2 ＝ 答案:14.6 (23)5.3 × 3 ＝ 答案:15.9 (24)6.7 × 0.2 ＝ 答案:1.34 (25)4.3 × 0.5 ＝ 答案:2.15 (26)4.7 × 0.4 ＝ 答案:1.88 (27)2.4 × 5 ＝ 答案:12 (28)7.3 × 0.3 ＝ 答案:2.19 (29)3.8 × 0.9 ＝ 答案:3.42 (30)7.3 × 4 ＝ 答案:29.2 (31)5.1 × 0.7 ＝ 答案:3.57 (32)9.8 × 2 ＝ 答案:19.6 (33)8.3 × 0.7 ＝ 答案:5.81 (34)4.3 × 0.6 ＝ 答案:2.58 (35)9.5 × 0.3 ＝ 答案:2.85 (36)9.9 × 5 ＝ 答案:49.5 (37)3.4 × 2 ＝ 答案:6.8 (38)2.9 × 4 ＝ 答案:11.6 (39)1.1 × 6 ＝ 答案:6.6 (40)2.1 × 5 ＝ 答案:10.5 (41)9.1 × 0.8 ＝ 答案:7.28 (42)9.7 × 0.3 ＝ 答案:2.91 (43)9.6 × 0.5 ＝ 答案:4.8 (44)5.1 × 0.6 ＝ 答案:3.06 (45)5.5 × 8 ＝ 答案:44 (46)9 × 8 ＝ 答案:72 (47)5 × 4 ＝ 答案:20 (48)4.1 × 5 ＝ 答案:20.5 (49)1.4 × 0.3 ＝ 答案:0.42 (50)2.4 × 9 ＝ 答案:21.6 (51)5.1 × 7 ＝ 答案:35.7 (52)7.9 × 5 ＝ 答案:39.5 (53)4.1 × 9 ＝ 答案:36.9 (54)1.6 × 2 ＝ 答案:3.2 (55)6.7 × 0.8 ＝ 答案:5.36 (56)8.9 × 0.7 ＝ 答案:6.23 (57)6.2 × 0.2 ＝ 答案:1.24 (58)2.6 × 7 ＝ 答案:18.2 (59)6.8 × 0.6 ＝ 答案:4.08 (60)5.6 × 9 ＝ 答案:50.4 (61)9.8 × 0.8 ＝ 答案:7.84 (62)9 × 9 ＝ 答案:81 (63)3.8 × 7 ＝ 答案:26.6 (64)2.5 × 6 ＝ 答案:15 (65)1.7 × 5 ＝ 答案:8.5 (66)4.6 × 0.7 ＝ 答案:3.22 (67)8.9 × 3 ＝ 答案:26.7 (68)7.9 × 0.6 ＝ 答案:4.74 (69)6.3 × 4 ＝ 答案:25.2 (70)2.9 × 0.3 ＝ 答案:0.87 (71)4.6 × 8 ＝ 答案:36.8 (72)1.5 × 2 ＝ 答案:3 (73)6.9 × 0.7 ＝ 答案:4.83 (74)5.8 × 6 ＝ 答案:34.8 (75)3.4 × 0.5 ＝ 答案:1.7 (76)1.9 × 2 ＝ 答案:3.8 (77)8.3 × 0.4 ＝ 答案:3.32 (78)7.4 × 6 ＝ 答案:44.4 (79)4.5 × 3 ＝ 答案:13.5 (80)5.9 × 4 ＝ 答案:23.6 (81)8.9 × 0.2 ＝ 答案:1.78 (82)4.9 × 8 ＝ 答案:39.2 (83)7.5 × 2 ＝ 答案:15 (84)1.5 × 7 ＝ 答案:10.5 (85)8.3 × 0.4 ＝ 答案:3.32 (86)6.1 × 0.6 ＝ 答案:3.66 (87)3.7 × 0.5 ＝ 答案:1.85 (88)7.4 × 0.5 ＝ 答案:3.7 (89)1.3 × 0.7 ＝ 答案:0.91 (90)3.5 × 0.7 ＝ 答案:2.45 (91)9.9 × 0.2 ＝ 答案:1.98 (92)2 × 7 ＝ 答案:14 (93)4.4 × 0.8 ＝ 答案:3.52 (94)8.5 × 4 ＝ 答案:34 (95)9.8 × 8 ＝ 答案:78.4 (96)9 × 9 ＝ 答案:81 (97)2.7 × 8 ＝ 答案:21.6 (98)1.6 × 0.3 ＝ 答案:0.48 (99)5.7 × 3 ＝ 答案:17.1 (100)7.5 × 5 ＝ 答案:37.5 1)4.1 × 0.7 ＝ 答案:2.87 (2)3.9 × 5 ＝ 答案:19.5 (3)8.5 × 2 ＝ 答案:17 (4)7.7 × 6 ＝ 答案:46.2 (5)4 × 9 ＝ 答案:36 (6)1.7 × 2 ＝ 答案:3.4 (7)7.9 × 6 ＝ 答案:47.4 (8)4.2 × 0.9 ＝ 答案:3.78 (9)2.6 × 6 ＝ 答案:15.6 (10)9.9 × 8 ＝ 答案:79.2 (11)1.7 × 5 ＝ 答案:8.5 (12)2.4 × 4 ＝ 答案:9.6 (13)6 × 0.4 ＝ 答案:2.4 (14)3.9 × 6 ＝ 答案:23.4 (15)7 × 0.4 ＝ 答案:2.8 (16)7.6 × 0.4 ＝ 答案:3.04 (17)3.9 × 0.7 ＝ 答案:2.73 (18)2.8 × 0.3 ＝ 答案:0.84 (19)3 × 9 ＝ 答案:27 (20)8.1 × 0.3 ＝ 答案:2.43 (21)3.3 × 8 ＝ 答案:26.4 (22)8.1 × 0.7 ＝ 答案:5.67 (23)2.2 × 3 ＝ 答案:6.6 (24)3 × 6 ＝ 答案:18 (25)3.2 × 5 ＝ 答案:16 (26)4.3 × 7 ＝ 答案:30.1 (27)6.7 × 5 ＝ 答案:33.5 (28)2.7 × 0.7 ＝ 答案:1.89 (29)1.4 × 0.9 ＝ 答案:1.26 (30)1.6 × 9 ＝ 答案:14.4 (31)8 × 0.8 ＝ 答案:6.4 (32)5.9 × 2 ＝ 答案:11.8 (33)3.6 × 9 ＝ 答案:32.4 (34)1.4 × 0.6 ＝ 答案:0.84 (35)8.3 × 0.2 ＝ 答案:1.66 (36)7 × 9 ＝ 答案:63 (37)8.7 × 8 ＝ 答案:69.6 (38)2.9 × 3 ＝ 答案:8.7 (39)6.7 × 0.2 ＝ 答案:1.34 (40)1.6 × 0.8 ＝ 答案:1.28 (41)9.6 × 2 ＝ 答案:19.2 (42)5.4 × 5 ＝ 答案:27 (43)5.8 × 0.7 ＝ 答案:4.06 (44)3.7 × 0.2 ＝ 答案:0.74 (45)8.7 × 0.6 ＝ 答案:5.22 (46)2.1 × 0.4 ＝ 答案:0.84 (47)1.6 × 5 ＝ 答案:8 (48)4.6 × 3 ＝ 答案:13.8 (49)9.5 × 0.6 ＝ 答案:5.7 (50)5.6 × 9 ＝ 答案:50.4 (51)5.9 × 0.3 ＝ 答案:1.77 (52)9 × 2 ＝ 答案:18 (53)9 × 4 ＝ 答案:36 (54)4.5 × 3 ＝ 答案:13.5 (55)4.4 × 6 ＝ 答案:26.4 (56)5.5 × 4 ＝ 答案:22 (57)8.6 × 6 ＝ 答案:51.6 (58)6.6 × 0.2 ＝ 答案:1.32 (59)8.7 × 0.6 ＝ 答案:5.22 (60)2.4 × 0.6 ＝ 答案:1.44 (61)2.1 × 0.2 ＝ 答案:0.42 (62)4.4 × 0.8 ＝ 答案:3.52 (63)7.1 × 9 ＝ 答案:63.9 (64)3.8 × 3 ＝ 答案:11.4 (65)8.9 × 7 ＝ 答案:62.3 (66)7.1 × 0.2 ＝ 答案:1.42 (67)3.9 × 0.5 ＝ 答案:1.95 (68)1.6 × 0.7 ＝ 答案:1.12 (69)3.9 × 0.9 ＝ 答案:3.51 (70)7.7 × 2 ＝ 答案:15.4 (71)7 × 0.7 ＝ 答案:4.9 (72)8.3 × 4 ＝ 答案:33.2 (73)5.1 × 0.2 ＝ 答案:1.02 (74)9.2 × 0.8 ＝ 答案:7.36 (75)1.3 × 6 ＝ 答案:7.8 (76)6.8 × 7 ＝ 答案:47.6 (77)2.2 × 3 ＝ 答案:6.6 (78)3.2 × 8 ＝ 答案:25.6 (79)6.8 × 0.2 ＝ 答案:1.36 (80)4.7 × 0.2 ＝ 答案:0.94 (81)6.7 × 9 ＝ 答案:60.3 (82)9.9 × 7 ＝ 答案:69.3 (83)3.3 × 0.2 ＝ 答案:0.66 (84)2.3 × 3 ＝ 答案:6.9 (85)8.3 × 0.5 ＝ 答案:4.15 (86)8.5 × 0.2 ＝ 答案:1.7 (87)1.7 × 0.7 ＝ 答案:1.19 (88)9 × 0.6 ＝ 答案:5.4 (89)9.9 × 5 ＝ 答案:49.5 (90)7.4 × 0.3 ＝ 答案:2.22 (91)7.7 × 2 ＝ 答案:15.4 (92)9.9 × 0.4 ＝ 答案:3.96 (93)5 × 0.2 ＝ 答案:1 (94)8.5 × 5 ＝ 答案:42.5 (95)9.1 × 9 ＝ 答案:81.9 (96)5.6 × 0.5 ＝ 答案:2.8 (97)5 × 8 ＝ 答案:40 (98)3.1 × 0.4 ＝ 答案:1.24 (99)6.8 × 8 ＝ 答案:54.4 (100)1.9 × 0.2 ＝ 答案:0.38
因该自己写
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8:12.84.96.78.106.7878.3334 偶偶奇奇偶奇偶偶奇奇偶OK，还有一题我也不会！
3.4－1.4= 7.82－7.2= 2.19＋9.1=
0.68＋0.42=8.1－5.1= 0.728－0.24=
0.8＋0.18= 1－0.98=0.048＋0.52= 5×400=
19.9+11.1= 187÷1000= 0.081×10=75÷10=
0.96÷0.8= 0.8×7＝ 1.5×7＝ 1.32×8＝ 0.7×8＝
10.3×2＝ 5×0.6＝ 0.9×0.3＝ 3.5×0.2＝ 2.01×0＝
10×0.05＝0.13×7＝ 0.21×100＝ 0.7×4＝ 0.05×4＝
4×0.3＝ 12.5×8＝ 2.3×4＝ 3.25×0＝ 0.4×50＝
30×0.1＝ 2.6×3＝ 4.1×2＝ 0.35×0.2＝ 7.5×0.1＝
1－0.08＝ 3.5×0.01＝ 1.25÷0.25＝ 0×9.8＝
3.9＋0.39＝4.8＋5.2＝ 8+2-8+2 286+198 314-202
526+301 223-99 1000－1000÷8 30×1/3 10*45-328
2/3×12 2.8*3+6/8 3/5×5/6 2/5×1/3 10*47+639
1/2-1/6 1/7×1/5 25×4/5 5/6-1/2 1/2×1/5
600-420/12 345/3-4*0.25 3001-1998
5000-105*34 (25+4)*4 300-4263/21
3.27×4 +3.27×5.7 （1.2+ 1.8）×4
1025－768÷32 2348+275*16 645-45*12
10-2.87-7.13 0.96+9.6*9.97.5-5.7*1/3 40*19+284