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五年级上册 小数乘法(笔算)

姓名:_______________ 学号:_______________ 用时:_______________
1.83 × 9.74 ≈ (保留两位小数) (3.9 + 1.6) × 1.6 = 6.6 × 3 =
6.68 × 7.02 ≈ (保留两位小数) 1.25 × 8 × 7.2 = 5 × 4.5 × 0.2 =
(1.8 + 2.7) × 3.8 = 3.47 × 7.87 ≈ (保留两位小数) 8 × 0.125 × 4.8 =
3.4 × 7.5 = 3.5 × 5 × 0.2 = 1.7 × 7.0 =
7.9 × 1.9 = 7.5 × 23 = 6.09 × 8.0 ≈ (保留两位小数)
1.6 × 23 = (2.4 + 1.7) × 1.3 = 7.83 × 4.69 ≈ (保留两位小数)
(3.4 + 1.3) × 3.4 = 6.0 × 44 = 8.6 × 5 =
3.33 × 3.09 ≈ (保留两位小数) 9.6 × 1.7 = 6.5 × 8.4 =
1.22 × 8.93 ≈ (保留两位小数) 8 × 1.25 × 6.4 = 2.2 × 50 =
0.5 × 3.6 × 2 = 9.41 × 7.0 ≈ (保留两位小数) 2.22 × 0.73 ≈ (保留两位小数)
1.6 × 1.3 = 2.5 × 4 × 1.6 = (2.5 + 4.5) × 0.4 =
2.5 × 4 × 3.6 = (2.6 + 3.2) × 2.5 = 6.3 × 9.2 =
3.0 × 0.2 = 1.25 × 8 × 6.4 = 4.34 × 2.91 ≈ (保留两位小数)
4 × 8.4 × 0.25 = 1.7 × 5 = 4.4 × 2.7 =
(0.9 + 0.9) × 4.4 = (4.2 + 4.0) × 4.1 = 5 × 0.2 × 4.5 =
1.71 × 8.06 ≈ (保留两位小数) (5.0 + 1.9) × 4.5 = 1.25 × 6.4 × 8 =
1.1 × 25 = 3.33 × 6.97 ≈ (保留两位小数)
五年级上册 小数乘法(笔算)(答案)
姓名:_______________ 学号:_______________ 用时:_______________
1.83 × 9.74 ≈ (保留两位小数) 17.82 (3.9 + 1.6) × 1.6 = 8.8 6.6 × 3 = 19.8
6.68 × 7.02 ≈ (保留两位小数) 46.89 1.25 × 8 × 7.2 = 72 5 × 4.5 × 0.2 = 4.5
(1.8 + 2.7) × 3.8 = 17.1 3.47 × 7.87 ≈ (保留两位小数) 27.31 8 × 0.125 × 4.8 = 4.8
3.4 × 7.5 = 25.5 3.5 × 5 × 0.2 = 3.5 1.7 × 7.0 = 11.9
7.9 × 1.9 = 15.01 7.5 × 23 = 172.5 6.09 × 8.0 ≈ (保留两位小数) 48.72
1.6 × 23 = 36.8 (2.4 + 1.7) × 1.3 = 5.33 7.83 × 4.69 ≈ (保留两位小数) 36.72
(3.4 + 1.3) × 3.4 = 15.98 6.0 × 44 = 264 8.6 × 5 = 43
3.33 × 3.09 ≈ (保留两位小数) 10.29 9.6 × 1.7 = 16.32 6.5 × 8.4 = 54.6
1.22 × 8.93 ≈ (保留两位小数) 10.89 8 × 1.25 × 6.4 = 64 2.2 × 50 = 110
0.5 × 3.6 × 2 = 3.6 9.41 × 7.0 ≈ (保留两位小数) 65.87 2.22 × 0.73 ≈ (保留两位小数) 1.62
1.6 × 1.3 = 2.08 2.5 × 4 × 1.6 = 16 (2.5 + 4.5) × 0.4 = 2.8
2.5 × 4 × 3.6 = 36 (2.6 + 3.2) × 2.5 = 14.5 6.3 × 9.2 = 57.96
3.0 × 0.2 = 0.6 1.25 × 8 × 6.4 = 64 4.34 × 2.91 ≈ (保留两位小数) 12.63
4 × 8.4 × 0.25 = 8.4 1.7 × 5 = 8.5 4.4 × 2.7 = 11.88
(0.9 + 0.9) × 4.4 = 7.92 (4.2 + 4.0) × 4.1 = 33.62 5 × 0.2 × 4.5 = 4.5
1.71 × 8.06 ≈ (保留两位小数) 13.78 (5.0 + 1.9) × 4.5 = 31.05 1.25 × 6.4 × 8 = 64
1.1 × 25 = 27.5 3.33 × 6.97 ≈ (保留两位小数) 23.21