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五年级上册 小数乘法(笔算)

姓名:_______________ 学号:_______________ 用时:_______________
1.6 × 2.5 × 4 = (4.6 + 4.0) × 1.9 = (1.6 + 4.4) × 4.7 =
9.9 × 4.0 = (3.5 + 3.5) × 4.5 = 0.64 × 7.3 ≈ (保留两位小数)
3.6 × 4 × 2.5 = 5.8 × 9.82 ≈ (保留两位小数) 2.8 × 7.6 =
6.0 × 8.5 = (5.0 + 3.2) × 2.4 = 4 × 0.25 × 8.4 =
(3.2 + 3.4) × 4.5 = 8.0 × 9.5 = 4.6 × 2.3 =
1.71 × 2.16 ≈ (保留两位小数) 0.2 × 5 × 4.5 = 9.6 × 2.7 =
1.4 × 7.2 = 0.2 × 5 × 4.5 = 1.1 × 3.1 =
8.61 × 4.76 ≈ (保留两位小数) 9.7 × 7.4 = 9.75 × 2.97 ≈ (保留两位小数)
0.25 × 8.4 × 4 = 0.125 × 4.8 × 8 = 0.5 × 5.8 × 2 =
8 × 1.25 × 7.2 = (0.5 + 2.1) × 1.0 = (4.1 + 1.0) × 2.2 =
3.9 × 38 = 4.3 × 4.1 = 8 × 6.4 × 0.125 =
4.78 × 0.25 × 4 = 0.2 × 5 × 4.5 = (2.0 + 0.2) × 3.2 =
2.5 × 42 = 2.5 × 4 × 1.6 = 6.3 × 2 =
6.29 × 4.67 ≈ (保留两位小数) 3.6 × 4 × 2.5 = 2.6 × 45 =
9.3 × 9.3 = (3.8 + 3.7) × 3.9 = 8 × 1.25 × 3.2 =
(0.3 + 4.7) × 2.0 = 10.0 × 9 = 3.54 × 6.86 ≈ (保留两位小数)
0.2 × 3.5 × 5 = 6.4 × 8 × 1.25 =
五年级上册 小数乘法(笔算)(答案)
姓名:_______________ 学号:_______________ 用时:_______________
1.6 × 2.5 × 4 = 16 (4.6 + 4.0) × 1.9 = 16.34 (1.6 + 4.4) × 4.7 = 28.2
9.9 × 4.0 = 39.6 (3.5 + 3.5) × 4.5 = 31.5 0.64 × 7.3 ≈ (保留两位小数) 4.67
3.6 × 4 × 2.5 = 36 5.8 × 9.82 ≈ (保留两位小数) 56.96 2.8 × 7.6 = 21.28
6.0 × 8.5 = 51 (5.0 + 3.2) × 2.4 = 19.68 4 × 0.25 × 8.4 = 8.4
(3.2 + 3.4) × 4.5 = 29.7 8.0 × 9.5 = 76 4.6 × 2.3 = 10.58
1.71 × 2.16 ≈ (保留两位小数) 3.69 0.2 × 5 × 4.5 = 4.5 9.6 × 2.7 = 25.92
1.4 × 7.2 = 10.08 0.2 × 5 × 4.5 = 4.5 1.1 × 3.1 = 3.41
8.61 × 4.76 ≈ (保留两位小数) 40.98 9.7 × 7.4 = 71.78 9.75 × 2.97 ≈ (保留两位小数) 28.96
0.25 × 8.4 × 4 = 8.4 0.125 × 4.8 × 8 = 4.8 0.5 × 5.8 × 2 = 5.8
8 × 1.25 × 7.2 = 72 (0.5 + 2.1) × 1.0 = 2.6 (4.1 + 1.0) × 2.2 = 11.22
3.9 × 38 = 148.2 4.3 × 4.1 = 17.63 8 × 6.4 × 0.125 = 6.4
4.78 × 0.25 × 4 = 4.78 0.2 × 5 × 4.5 = 4.5 (2.0 + 0.2) × 3.2 = 7.04
2.5 × 42 = 105 2.5 × 4 × 1.6 = 16 6.3 × 2 = 12.6
6.29 × 4.67 ≈ (保留两位小数) 29.37 3.6 × 4 × 2.5 = 36 2.6 × 45 = 117
9.3 × 9.3 = 86.49 (3.8 + 3.7) × 3.9 = 29.25 8 × 1.25 × 3.2 = 32
(0.3 + 4.7) × 2.0 = 10 10.0 × 9 = 90 3.54 × 6.86 ≈ (保留两位小数) 24.28
0.2 × 3.5 × 5 = 3.5 6.4 × 8 × 1.25 = 64