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五年级上册 小数乘法(笔算)

姓名:_______________ 学号:_______________ 用时:_______________
1.2 × 0.1 = 4 × 6.8 × 0.25 = (2.5 + 3.1) × 3.9 =
2.5 × 4.5 = 0.4 × 2.0 = 7.3 × 9.9 =
9.7 × 4.0 = 9.3 × 35 = 6.34 × 3.3 ≈ (保留两位小数)
(4.3 + 3.6) × 1.6 = 1.6 × 2.5 × 4 = 9.5 × 6.76 ≈ (保留两位小数)
2 × 4.6 × 0.5 = (0.8 + 4.6) × 4.1 = 8.5 × 4.6 =
(2.3 + 0.7) × 0.2 = (2.6 + 1.2) × 4.9 = 3.95 × 8.71 ≈ (保留两位小数)
8.14 × 4.2 ≈ (保留两位小数) 6.2 × 5.3 = (0.8 + 1.0) × 1.7 =
0.25 × 8.4 × 4 = 0.2 × 3.5 × 5 = 2.4 × 43 =
4 × 2.5 × 3.6 = 9.0 × 43 = 8.0 × 43 =
2.9 × 5.5 = 3.3 × 4.47 ≈ (保留两位小数) 1.7 × 7.2 =
(3.5 + 0.4) × 3.5 = (5.0 + 2.1) × 1.3 = 9.1 × 28 =
5.8 × 2 × 0.5 = (4.0 + 4.0) × 2.2 = 1.3 × 10.0 =
8.4 × 4 × 0.25 = 0.2 × 3.5 × 5 = (2.8 + 1.3) × 1.8 =
(4.7 + 0.7) × 1.2 = 1.34 × 5.3 ≈ (保留两位小数) 3.6 × 0.5 × 2 =
(0.7 + 2.0) × 2.6 = 9.19 × 1.98 ≈ (保留两位小数) (2.0 + 2.6) × 4.0 =
3.37 × 4.51 ≈ (保留两位小数) 9.04 × 10.0 ≈ (保留两位小数) 0.5 × 5.8 × 2 =
3.6 × 4 × 2.5 = 2.93 × 7.48 ≈ (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:_______________
1.2 × 0.1 = 0.12 4 × 6.8 × 0.25 = 6.8 (2.5 + 3.1) × 3.9 = 21.84
2.5 × 4.5 = 11.25 0.4 × 2.0 = 0.8 7.3 × 9.9 = 72.27
9.7 × 4.0 = 38.8 9.3 × 35 = 325.5 6.34 × 3.3 ≈ (保留两位小数) 20.92
(4.3 + 3.6) × 1.6 = 12.64 1.6 × 2.5 × 4 = 16 9.5 × 6.76 ≈ (保留两位小数) 64.22
2 × 4.6 × 0.5 = 4.6 (0.8 + 4.6) × 4.1 = 22.14 8.5 × 4.6 = 39.1
(2.3 + 0.7) × 0.2 = 0.6 (2.6 + 1.2) × 4.9 = 18.62 3.95 × 8.71 ≈ (保留两位小数) 34.40
8.14 × 4.2 ≈ (保留两位小数) 34.19 6.2 × 5.3 = 32.86 (0.8 + 1.0) × 1.7 = 3.06
0.25 × 8.4 × 4 = 8.4 0.2 × 3.5 × 5 = 3.5 2.4 × 43 = 103.2
4 × 2.5 × 3.6 = 36 9.0 × 43 = 387 8.0 × 43 = 344
2.9 × 5.5 = 15.95 3.3 × 4.47 ≈ (保留两位小数) 14.75 1.7 × 7.2 = 12.24
(3.5 + 0.4) × 3.5 = 13.65 (5.0 + 2.1) × 1.3 = 9.23 9.1 × 28 = 254.8
5.8 × 2 × 0.5 = 5.8 (4.0 + 4.0) × 2.2 = 17.6 1.3 × 10.0 = 13
8.4 × 4 × 0.25 = 8.4 0.2 × 3.5 × 5 = 3.5 (2.8 + 1.3) × 1.8 = 7.38
(4.7 + 0.7) × 1.2 = 6.48 1.34 × 5.3 ≈ (保留两位小数) 7.10 3.6 × 0.5 × 2 = 3.6
(0.7 + 2.0) × 2.6 = 7.02 9.19 × 1.98 ≈ (保留两位小数) 18.20 (2.0 + 2.6) × 4.0 = 18.4
3.37 × 4.51 ≈ (保留两位小数) 15.20 9.04 × 10.0 ≈ (保留两位小数) 90.40 0.5 × 5.8 × 2 = 5.8
3.6 × 4 × 2.5 = 36 2.93 × 7.48 ≈ (保留两位小数) 21.92