1 直接写出得数。(每题1分,共20分)
48 - 26 = 325 + 137 = 207 ÷ 3 = 72 - 29 =
56 + 18 = 346 - 123 = 547 + 318 = 22 + 61 =
216 ÷ 8 = 639 + 258 = 872 - 345 = 225 ÷ 5 =
25 × 4 = 20 ÷ 100 = 0.28 + 0.2 = 10.6 × 1000 =
287 - 199 = 0.5 ÷ 10 = 10 - 4.3 - 3.7 = 3.8 + 5.6 =
48 - 26 = 325 + 137 = 207 ÷ 3 = 72 - 29 =
56 + 18 = 346 - 123 = 547 + 318 = 22 + 61 =
216 ÷ 8 = 639 + 258 = 872 - 345 = 225 ÷ 5 =
25 × 4 = 20 ÷ 100 = 0.28 + 0.2 = 10.6 × 1000 =
287 - 199 = 0.5 ÷ 10 = 10 - 4.3 - 3.7 = 3.8 + 5.6 =
答案
22 462 69 43
74 223 865 83
27 897 527 45
100 0.2 0.48 10600
88 0.05 2 9.4
74 223 865 83
27 897 527 45
100 0.2 0.48 10600
88 0.05 2 9.4
2 列竖式计算。(每题3分,共12分)
36.74 - 23.26 = 21.8 - 8.59 = 5.66 + 12.83 = 7.47 + 23.9 =
36.74 - 23.26 = 21.8 - 8.59 = 5.66 + 12.83 = 7.47 + 23.9 =
答案
竖式略
13.48 13.21 18.49 31.37
13.48 13.21 18.49 31.37
3 计算下面各题,能简算的要简算。(每题3分,共18分)
94.6 + 32.81 - 14.6 54.1 - (18.6 - 14.62) 7.48 + 18.5 + 0.52
8.38 - 2.17 + 0.17 8.44 + 9.87 + 18.56 + 10.13 215 × 18 - 15 × 18
94.6 + 32.81 - 14.6 54.1 - (18.6 - 14.62) 7.48 + 18.5 + 0.52
8.38 - 2.17 + 0.17 8.44 + 9.87 + 18.56 + 10.13 215 × 18 - 15 × 18
答案
112.81 50.12 26.5
6.38 47 3600
6.38 47 3600
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