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五年级上册 小数乘法(笔算)

姓名:_______________ 学号:_______________ 用时:_______________
6.6 × 7.0 = 9.6 × 2.44 ≈ (保留两位小数) 4.9 × 7.4 =
(3.5 + 1.7) × 0.5 = 2.93 × 3.26 ≈ (保留两位小数) 2.2 × 4.6 =
(2.7 + 1.3) × 2.2 = 1.9 × 29 = 0.2 × 4 =
4.0 × 6.6 = 4.33 × 2.93 ≈ (保留两位小数) (1.7 + 1.9) × 1.9 =
7.9 × 7.9 = 0.125 × 4.8 × 8 = 0.25 × 4.78 × 4 =
(1.0 + 2.8) × 4.1 = 2 × 4.6 × 0.5 = (1.0 + 1.7) × 2.3 =
0.2 × 6.6 = 7.3 × 13 = 8.2 × 0.6 ≈ (保留两位小数)
(1.8 + 2.1) × 4.8 = 4 × 6.8 × 0.25 = 2.9 × 6.4 =
(3.9 + 1.9) × 4.0 = 8.1 × 37 = 1.52 × 5.15 ≈ (保留两位小数)
4.78 × 4 × 0.25 = 4.5 × 0.2 × 5 = 7.79 × 3.01 ≈ (保留两位小数)
(1.8 + 4.2) × 1.7 = 10.0 × 7.8 = 4.4 × 32 =
6.9 × 1.5 = 1.4 × 22 = 6.8 × 0.25 × 4 =
6.02 × 4.73 ≈ (保留两位小数) (1.4 + 3.8) × 2.8 = 1.1 × 19 =
9.44 × 6.47 ≈ (保留两位小数) 7.9 × 8.8 = (4.5 + 2.7) × 2.5 =
(4.4 + 2.5) × 0.3 = 1.67 × 5.62 ≈ (保留两位小数) (3.7 + 4.9) × 0.3 =
(3.0 + 4.3) × 2.5 = 9.19 × 4.1 ≈ (保留两位小数) 3.8 × 2 =
2.7 × 2.1 = 3.58 × 7.97 ≈ (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:_______________
6.6 × 7.0 = 46.2 9.6 × 2.44 ≈ (保留两位小数) 23.42 4.9 × 7.4 = 36.26
(3.5 + 1.7) × 0.5 = 2.6 2.93 × 3.26 ≈ (保留两位小数) 9.55 2.2 × 4.6 = 10.12
(2.7 + 1.3) × 2.2 = 8.8 1.9 × 29 = 55.1 0.2 × 4 = 0.8
4.0 × 6.6 = 26.4 4.33 × 2.93 ≈ (保留两位小数) 12.69 (1.7 + 1.9) × 1.9 = 6.84
7.9 × 7.9 = 62.41 0.125 × 4.8 × 8 = 4.8 0.25 × 4.78 × 4 = 4.78
(1.0 + 2.8) × 4.1 = 15.58 2 × 4.6 × 0.5 = 4.6 (1.0 + 1.7) × 2.3 = 6.21
0.2 × 6.6 = 1.32 7.3 × 13 = 94.9 8.2 × 0.6 ≈ (保留两位小数) 4.92
(1.8 + 2.1) × 4.8 = 18.72 4 × 6.8 × 0.25 = 6.8 2.9 × 6.4 = 18.56
(3.9 + 1.9) × 4.0 = 23.2 8.1 × 37 = 299.7 1.52 × 5.15 ≈ (保留两位小数) 7.83
4.78 × 4 × 0.25 = 4.78 4.5 × 0.2 × 5 = 4.5 7.79 × 3.01 ≈ (保留两位小数) 23.45
(1.8 + 4.2) × 1.7 = 10.2 10.0 × 7.8 = 78 4.4 × 32 = 140.8
6.9 × 1.5 = 10.35 1.4 × 22 = 30.8 6.8 × 0.25 × 4 = 6.8
6.02 × 4.73 ≈ (保留两位小数) 28.47 (1.4 + 3.8) × 2.8 = 14.56 1.1 × 19 = 20.9
9.44 × 6.47 ≈ (保留两位小数) 61.08 7.9 × 8.8 = 69.52 (4.5 + 2.7) × 2.5 = 18
(4.4 + 2.5) × 0.3 = 2.07 1.67 × 5.62 ≈ (保留两位小数) 9.39 (3.7 + 4.9) × 0.3 = 2.58
(3.0 + 4.3) × 2.5 = 18.25 9.19 × 4.1 ≈ (保留两位小数) 37.68 3.8 × 2 = 7.6
2.7 × 2.1 = 5.67 3.58 × 7.97 ≈ (保留两位小数) 28.53