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五年级上册 小数乘法(笔算)

姓名:_______________ 学号:_______________ 用时:_______________
1.8 × 38 = (0.3 + 1.2) × 0.9 = 5.8 × 29 =
(0.6 + 0.5) × 1.5 = 1.05 × 1.14 ≈ (保留两位小数) (5.0 + 3.5) × 0.1 =
1.25 × 3.2 × 8 = 1.63 × 7.11 ≈ (保留两位小数) 0.25 × 4.78 × 4 =
4.06 × 5.94 ≈ (保留两位小数) 2.44 × 5.32 ≈ (保留两位小数) 4.5 × 5.9 =
1.25 × 8 × 7.2 = (1.5 + 1.8) × 0.2 = 4.0 × 3.43 ≈ (保留两位小数)
5.39 × 5.93 ≈ (保留两位小数) 8.37 × 1.06 ≈ (保留两位小数) 2.1 × 22 =
2.27 × 7.76 ≈ (保留两位小数) 4 × 3.6 × 2.5 = 6.7 × 42 =
8 × 7.2 × 1.25 = 3.02 × 3.91 ≈ (保留两位小数) 8.9 × 4 =
0.5 × 6.3 = 9.5 × 4.7 = 2.6 × 6.3 =
2.4 × 0.7 = 9.2 × 21 = 5.25 × 3.52 ≈ (保留两位小数)
3.9 × 3.7 = 0.5 × 23 = 9.7 × 2.6 =
4 × 1.6 × 2.5 = (3.2 + 3.6) × 1.3 = 0.5 × 2 × 5.8 =
(1.7 + 4.6) × 3.2 = (2.5 + 4.2) × 0.8 = 0.91 × 3.77 ≈ (保留两位小数)
9.55 × 3.66 ≈ (保留两位小数) 9.36 × 9.25 ≈ (保留两位小数) 4.2 × 1.2 =
4.78 × 0.25 × 4 = 6.3 × 6.8 = (4.5 + 0.5) × 0.1 =
5.6 × 7.1 = 6.24 × 8.79 ≈ (保留两位小数) (2.8 + 0.8) × 4.2 =
(1.8 + 4.4) × 0.9 = (4.0 + 4.3) × 2.7 =
五年级上册 小数乘法(笔算)(答案)
姓名:_______________ 学号:_______________ 用时:_______________
1.8 × 38 = 68.4 (0.3 + 1.2) × 0.9 = 1.35 5.8 × 29 = 168.2
(0.6 + 0.5) × 1.5 = 1.65 1.05 × 1.14 ≈ (保留两位小数) 1.20 (5.0 + 3.5) × 0.1 = 0.85
1.25 × 3.2 × 8 = 32 1.63 × 7.11 ≈ (保留两位小数) 11.59 0.25 × 4.78 × 4 = 4.78
4.06 × 5.94 ≈ (保留两位小数) 24.12 2.44 × 5.32 ≈ (保留两位小数) 12.98 4.5 × 5.9 = 26.55
1.25 × 8 × 7.2 = 72 (1.5 + 1.8) × 0.2 = 0.66 4.0 × 3.43 ≈ (保留两位小数) 13.72
5.39 × 5.93 ≈ (保留两位小数) 31.96 8.37 × 1.06 ≈ (保留两位小数) 8.87 2.1 × 22 = 46.2
2.27 × 7.76 ≈ (保留两位小数) 17.62 4 × 3.6 × 2.5 = 36 6.7 × 42 = 281.4
8 × 7.2 × 1.25 = 72 3.02 × 3.91 ≈ (保留两位小数) 11.81 8.9 × 4 = 35.6
0.5 × 6.3 = 3.15 9.5 × 4.7 = 44.65 2.6 × 6.3 = 16.38
2.4 × 0.7 = 1.68 9.2 × 21 = 193.2 5.25 × 3.52 ≈ (保留两位小数) 18.48
3.9 × 3.7 = 14.43 0.5 × 23 = 11.5 9.7 × 2.6 = 25.22
4 × 1.6 × 2.5 = 16 (3.2 + 3.6) × 1.3 = 8.84 0.5 × 2 × 5.8 = 5.8
(1.7 + 4.6) × 3.2 = 20.16 (2.5 + 4.2) × 0.8 = 5.36 0.91 × 3.77 ≈ (保留两位小数) 3.43
9.55 × 3.66 ≈ (保留两位小数) 34.95 9.36 × 9.25 ≈ (保留两位小数) 86.58 4.2 × 1.2 = 5.04
4.78 × 0.25 × 4 = 4.78 6.3 × 6.8 = 42.84 (4.5 + 0.5) × 0.1 = 0.5
5.6 × 7.1 = 39.76 6.24 × 8.79 ≈ (保留两位小数) 54.85 (2.8 + 0.8) × 4.2 = 15.12
(1.8 + 4.4) × 0.9 = 5.58 (4.0 + 4.3) × 2.7 = 22.41