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五年级上册 小数乘法(笔算)

姓名:_______________ 学号:_______________ 用时:_______________
7.5 × 2.8 = 6.5 × 1.1 = 7.9 × 7 =
9.77 × 9.77 ≈ (保留两位小数) (3.8 + 0.4) × 4.8 = 2.8 × 5 =
8.9 × 40 = (2.1 + 3.1) × 0.5 = (3.3 + 4.8) × 0.9 =
0.5 × 45 = 9.86 × 2.8 ≈ (保留两位小数) (0.5 + 3.5) × 4.7 =
(0.2 + 0.5) × 4.3 = 3.9 × 6.7 = 4.0 × 39 =
5.9 × 2.9 = 1.56 × 8.69 ≈ (保留两位小数) (2.3 + 3.4) × 4.9 =
6.1 × 4.0 = 4.2 × 21 = 2.7 × 20 =
0.5 × 3.6 × 2 = 1.0 × 15 = 0.7 × 48 =
7.4 × 9.9 = 2.7 × 8.59 ≈ (保留两位小数) 6.16 × 1.95 ≈ (保留两位小数)
1.7 × 6 = 6.7 × 21 = 0.5 × 3.6 × 2 =
2.4 × 5.4 = 7.51 × 4.36 ≈ (保留两位小数) 8.48 × 9.77 ≈ (保留两位小数)
1.18 × 9.77 ≈ (保留两位小数) 7.2 × 8 × 1.25 = (3.8 + 4.3) × 4.2 =
6.4 × 1.25 × 8 = 8.87 × 4.62 ≈ (保留两位小数) 4.47 × 8.54 ≈ (保留两位小数)
(1.6 + 3.1) × 1.3 = 9.07 × 3.81 ≈ (保留两位小数) (2.8 + 1.8) × 4.0 =
3.64 × 9.01 ≈ (保留两位小数) 1.25 × 8 × 3.2 = 2.6 × 35 =
1.9 × 24 = 2.5 × 3.6 × 4 = 1.42 × 0.2 ≈ (保留两位小数)
3.4 × 5.0 = 4 × 2.5 × 1.6 =
五年级上册 小数乘法(笔算)(答案)
姓名:_______________ 学号:_______________ 用时:_______________
7.5 × 2.8 = 21 6.5 × 1.1 = 7.15 7.9 × 7 = 55.3
9.77 × 9.77 ≈ (保留两位小数) 95.45 (3.8 + 0.4) × 4.8 = 20.16 2.8 × 5 = 14
8.9 × 40 = 356 (2.1 + 3.1) × 0.5 = 2.6 (3.3 + 4.8) × 0.9 = 7.29
0.5 × 45 = 22.5 9.86 × 2.8 ≈ (保留两位小数) 27.61 (0.5 + 3.5) × 4.7 = 18.8
(0.2 + 0.5) × 4.3 = 3.01 3.9 × 6.7 = 26.13 4.0 × 39 = 156
5.9 × 2.9 = 17.11 1.56 × 8.69 ≈ (保留两位小数) 13.56 (2.3 + 3.4) × 4.9 = 27.93
6.1 × 4.0 = 24.4 4.2 × 21 = 88.2 2.7 × 20 = 54
0.5 × 3.6 × 2 = 3.6 1.0 × 15 = 15 0.7 × 48 = 33.6
7.4 × 9.9 = 73.26 2.7 × 8.59 ≈ (保留两位小数) 23.19 6.16 × 1.95 ≈ (保留两位小数) 12.01
1.7 × 6 = 10.2 6.7 × 21 = 140.7 0.5 × 3.6 × 2 = 3.6
2.4 × 5.4 = 12.96 7.51 × 4.36 ≈ (保留两位小数) 32.74 8.48 × 9.77 ≈ (保留两位小数) 82.85
1.18 × 9.77 ≈ (保留两位小数) 11.53 7.2 × 8 × 1.25 = 72 (3.8 + 4.3) × 4.2 = 34.02
6.4 × 1.25 × 8 = 64 8.87 × 4.62 ≈ (保留两位小数) 40.98 4.47 × 8.54 ≈ (保留两位小数) 38.17
(1.6 + 3.1) × 1.3 = 6.11 9.07 × 3.81 ≈ (保留两位小数) 34.56 (2.8 + 1.8) × 4.0 = 18.4
3.64 × 9.01 ≈ (保留两位小数) 32.80 1.25 × 8 × 3.2 = 32 2.6 × 35 = 91
1.9 × 24 = 45.6 2.5 × 3.6 × 4 = 36 1.42 × 0.2 ≈ (保留两位小数) 0.28
3.4 × 5.0 = 17 4 × 2.5 × 1.6 = 16