小数乘法简便计算习题
小数乘法简便计算(一)
0.25×8.5×4 12.5×0.96×0.8 0.25×0.73×4 4.36×12.5×8
0.25×16.2×4 1.25×2.5×32 3.2×0.25×12.5 0.25×36
(1.25-0.125)×8 4.8×10.1 3.6×102 0.39×199
0.32×403 3.65×10.1 0.85×9.9 3.72×3.5+6.28×3.5
15.6×2.1-15.6×1.1 4.8×7.8+78×0.52 56.5×99+56.5
小数乘法简便计算(二)
7.09×10.8-0.8×7.09 1.87×9.9+0.187 4.2×99+4.2
3.83×
4.56+3.83×
5.44 9.7×99+9.7 27.5×3.7-7.5×3.7
3.14×0.68+31.4×0.032 7.2×0.2+2.4×1.4 5.4×11-5.4
7.74×(2.8-1.3)+1.5×2.26 3.9×2.7+3.9×7.3 12.7×9.9+1.27
2.3×16+2.3×23+2.3
3.65×
4.7 -36.5×0.37 101×0.87-0.91×87
小数乘法简便计算(三)
46×57+23×86 10.7×16.1-15.1×10.7 7.6×0.8+0.2×7.6
1.28×8.6+0.72×8.6 10.6×0.35-9.6×0.35 8.9×1.01 0.65×101
48×0.56+44×0.48 0.279×343+0.657×279 0.264×519+264×0.481
9.16×1.53-0.053×91.6 0.125×96 12.5×10.8 (20-4)×0.25
45×21-50×2.1 45×1.58+5.5×15.8 25×7.3×0.4
小数乘法简便计算(四)
53×10.1 4.2×6.51+3.49×4.2 25×7.3×0.4 2.7×3.7+0.37×73
0.125×96 12.5×10.8 (20-4)×0.25 3.65×10.1
45×21-50×2.1 45×1.58+5.5×15.8 9.99×2.22+3.33×3.34
3.7×1.4×0.05 72×0.81+10.4 1.4×25+3.45
1.5×102 1.25×0.7×0.8 7.6×0.8+0.2×7.6 0.85×9.9
1.28×8.6+0.72×8.6 1
2.5×0.96×0.8 10.6×0.35-9.6×0.35
小数乘法简便计算(五)
8.7×99 0.8×(12.5 – 1.25) 1.25×0.4×80×2.5 1.25×2.5×32
5×1.03×0.2 32×1.25 0.45×99 15.6×2.1-15.6×1.1
0.25×16.2×4 (1.25-0.125)×8 4.8×10.1 3.6×102
3.72×3.5+6.28×3.5 1.87×9.9+0.187
4.2×99+
4.2
4.8×7.8+78×0.52 56.5×99+56.5 7.09×10.8-0.8×7.09
3.83×
4.56+3.83×
5.44 4.36×12.5×8 9.7×99+9.7
小数乘法简便计算(六)
27.5×3.7-7.5×3.7 3.2×0.25×12.5 0.25×36 0.25×0.73×4
3.14×0.68+31.4×0.032 7.2×0.2+2.4×1.4 8.9×1.01 0.65×101
7.74×(2.8-1.3)+1.5×2.26 3.9×2.7+3.9×7.3 12.7×9.9+1.27
5.4×11-5.4 2.3×16+2.3×23+2.3 3.65×4.7-3
6.5×0.37
46×57+23×86 2.22×9.9+6.66×6.7 101×0.87-0.91×87
10.7×16.1-15.1×10.7 0.39×199 0.32×403 0.25×8.5×4