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五年级上册 小数乘法(笔算)

姓名:_______________ 学号:_______________ 用时:_______________
1.34 × 2.81 ≈ (保留两位小数) 1.3 × 4 = 9.2 × 3.5 =
6.39 × 2.45 ≈ (保留两位小数) 6.1 × 8.65 ≈ (保留两位小数) 6.31 × 3.1 ≈ (保留两位小数)
7.6 × 48 = (0.1 + 4.1) × 1.1 = 7.0 × 24 =
5.9 × 29 = 8.42 × 1.96 ≈ (保留两位小数) 5.9 × 47 =
6.0 × 41 = 8 × 6.4 × 1.25 = (3.6 + 4.0) × 0.7 =
(2.5 + 0.8) × 4.1 = 5.56 × 9.57 ≈ (保留两位小数) 4.62 × 0.3 ≈ (保留两位小数)
(4.1 + 2.8) × 0.6 = 3.62 × 0.76 ≈ (保留两位小数) 6.5 × 0.8 =
9.1 × 48 = 1.27 × 5.72 ≈ (保留两位小数) 8.0 × 21 =
(0.4 + 1.1) × 0.4 = (2.1 + 4.2) × 1.6 = 4.47 × 8.21 ≈ (保留两位小数)
7.4 × 7.73 ≈ (保留两位小数) 0.7 × 1.9 = 8.1 × 6.89 ≈ (保留两位小数)
3.7 × 12 = 3.59 × 2.58 ≈ (保留两位小数) 6.0 × 3.7 =
8.07 × 5.64 ≈ (保留两位小数) (4.5 + 2.8) × 3.5 = 1.9 × 12 =
7.5 × 34 = 3.3 × 16 = 4.6 × 2 × 0.5 =
(2.2 + 0.4) × 3.8 = 9.0 × 13 = 5.11 × 9.04 ≈ (保留两位小数)
2.1 × 2.1 = 7.78 × 4.16 ≈ (保留两位小数) 3.9 × 1.3 =
0.25 × 4 × 6.8 = 9.7 × 2.3 = 5.1 × 5.5 =
(0.5 + 0.6) × 4.8 = 2.22 × 4.28 ≈ (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:_______________
1.34 × 2.81 ≈ (保留两位小数) 3.77 1.3 × 4 = 5.2 9.2 × 3.5 = 32.2
6.39 × 2.45 ≈ (保留两位小数) 15.66 6.1 × 8.65 ≈ (保留两位小数) 52.77 6.31 × 3.1 ≈ (保留两位小数) 19.56
7.6 × 48 = 364.8 (0.1 + 4.1) × 1.1 = 4.62 7.0 × 24 = 168
5.9 × 29 = 171.1 8.42 × 1.96 ≈ (保留两位小数) 16.50 5.9 × 47 = 277.3
6.0 × 41 = 246 8 × 6.4 × 1.25 = 64 (3.6 + 4.0) × 0.7 = 5.32
(2.5 + 0.8) × 4.1 = 13.53 5.56 × 9.57 ≈ (保留两位小数) 53.21 4.62 × 0.3 ≈ (保留两位小数) 1.39
(4.1 + 2.8) × 0.6 = 4.14 3.62 × 0.76 ≈ (保留两位小数) 2.75 6.5 × 0.8 = 5.2
9.1 × 48 = 436.8 1.27 × 5.72 ≈ (保留两位小数) 7.26 8.0 × 21 = 168
(0.4 + 1.1) × 0.4 = 0.6 (2.1 + 4.2) × 1.6 = 10.08 4.47 × 8.21 ≈ (保留两位小数) 36.70
7.4 × 7.73 ≈ (保留两位小数) 57.20 0.7 × 1.9 = 1.33 8.1 × 6.89 ≈ (保留两位小数) 55.81
3.7 × 12 = 44.4 3.59 × 2.58 ≈ (保留两位小数) 9.26 6.0 × 3.7 = 22.2
8.07 × 5.64 ≈ (保留两位小数) 45.51 (4.5 + 2.8) × 3.5 = 25.55 1.9 × 12 = 22.8
7.5 × 34 = 255 3.3 × 16 = 52.8 4.6 × 2 × 0.5 = 4.6
(2.2 + 0.4) × 3.8 = 9.88 9.0 × 13 = 117 5.11 × 9.04 ≈ (保留两位小数) 46.19
2.1 × 2.1 = 4.41 7.78 × 4.16 ≈ (保留两位小数) 32.36 3.9 × 1.3 = 5.07
0.25 × 4 × 6.8 = 6.8 9.7 × 2.3 = 22.31 5.1 × 5.5 = 28.05
(0.5 + 0.6) × 4.8 = 5.28 2.22 × 4.28 ≈ (保留两位小数) 9.50