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五年级上册 小数乘法(笔算)

姓名:_______________ 学号:_______________ 用时:_______________
7.7 × 8 = 8.8 × 3.5 = 8.23 × 0.93 ≈ (保留两位小数)
7.2 × 8 × 1.25 = 0.4 × 47 = (3.3 + 1.0) × 3.0 =
6.29 × 0.55 ≈ (保留两位小数) 7.38 × 8.64 ≈ (保留两位小数) 0.5 × 2 × 3.6 =
0.5 × 5.8 × 2 = 4 × 3.6 × 2.5 = 5.8 × 0.5 × 2 =
5.3 × 12 = 2.5 × 1.6 × 4 = 8.05 × 5.77 ≈ (保留两位小数)
8.6 × 0.61 ≈ (保留两位小数) (0.4 + 4.7) × 4.7 = 4.2 × 0.4 =
0.5 × 9.4 = 0.25 × 4 × 4.78 = (4.9 + 4.3) × 0.5 =
(4.2 + 2.1) × 3.8 = 4.21 × 2.45 ≈ (保留两位小数) 6.41 × 2.26 ≈ (保留两位小数)
2.52 × 4.14 ≈ (保留两位小数) 8 × 4.8 × 0.125 = 9.72 × 1.32 ≈ (保留两位小数)
2.7 × 17 = 7.91 × 1.13 ≈ (保留两位小数) 0.8 × 5.38 ≈ (保留两位小数)
9.9 × 8.9 = (1.3 + 4.1) × 3.0 = (4.9 + 4.8) × 3.5 =
2.4 × 0.2 = 2.1 × 32 = (1.6 + 4.0) × 0.9 =
3.34 × 5.71 ≈ (保留两位小数) (4.6 + 0.9) × 4.5 = 6.76 × 1.14 ≈ (保留两位小数)
8.9 × 7.6 = 4.09 × 1.08 ≈ (保留两位小数) (1.8 + 3.1) × 4.5 =
8.36 × 1.75 ≈ (保留两位小数) (2.0 + 4.2) × 0.7 = (1.3 + 0.8) × 4.3 =
0.6 × 35 = 9.4 × 7 = (1.5 + 1.6) × 4.8 =
9.62 × 0.82 ≈ (保留两位小数) 6.4 × 45 =
五年级上册 小数乘法(笔算)(答案)
姓名:_______________ 学号:_______________ 用时:_______________
7.7 × 8 = 61.6 8.8 × 3.5 = 30.8 8.23 × 0.93 ≈ (保留两位小数) 7.65
7.2 × 8 × 1.25 = 72 0.4 × 47 = 18.8 (3.3 + 1.0) × 3.0 = 12.9
6.29 × 0.55 ≈ (保留两位小数) 3.46 7.38 × 8.64 ≈ (保留两位小数) 63.76 0.5 × 2 × 3.6 = 3.6
0.5 × 5.8 × 2 = 5.8 4 × 3.6 × 2.5 = 36 5.8 × 0.5 × 2 = 5.8
5.3 × 12 = 63.6 2.5 × 1.6 × 4 = 16 8.05 × 5.77 ≈ (保留两位小数) 46.45
8.6 × 0.61 ≈ (保留两位小数) 5.25 (0.4 + 4.7) × 4.7 = 23.97 4.2 × 0.4 = 1.68
0.5 × 9.4 = 4.7 0.25 × 4 × 4.78 = 4.78 (4.9 + 4.3) × 0.5 = 4.6
(4.2 + 2.1) × 3.8 = 23.94 4.21 × 2.45 ≈ (保留两位小数) 10.31 6.41 × 2.26 ≈ (保留两位小数) 14.49
2.52 × 4.14 ≈ (保留两位小数) 10.43 8 × 4.8 × 0.125 = 4.8 9.72 × 1.32 ≈ (保留两位小数) 12.83
2.7 × 17 = 45.9 7.91 × 1.13 ≈ (保留两位小数) 8.94 0.8 × 5.38 ≈ (保留两位小数) 4.30
9.9 × 8.9 = 88.11 (1.3 + 4.1) × 3.0 = 16.2 (4.9 + 4.8) × 3.5 = 33.95
2.4 × 0.2 = 0.48 2.1 × 32 = 67.2 (1.6 + 4.0) × 0.9 = 5.04
3.34 × 5.71 ≈ (保留两位小数) 19.07 (4.6 + 0.9) × 4.5 = 24.75 6.76 × 1.14 ≈ (保留两位小数) 7.71
8.9 × 7.6 = 67.64 4.09 × 1.08 ≈ (保留两位小数) 4.42 (1.8 + 3.1) × 4.5 = 22.05
8.36 × 1.75 ≈ (保留两位小数) 14.63 (2.0 + 4.2) × 0.7 = 4.34 (1.3 + 0.8) × 4.3 = 9.03
0.6 × 35 = 21 9.4 × 7 = 65.8 (1.5 + 1.6) × 4.8 = 14.88
9.62 × 0.82 ≈ (保留两位小数) 7.89 6.4 × 45 = 288