1、精品文檔8.9 X 2.4 =5.5 X 55=9.77 X 0.02 =精品文檔許家莊小學(xué)小數(shù)乘除法專項(xiàng)練習(xí)乘法5.6 X 2.9 =3.77 X 1.8 =0.02 X 96=5.22 X 0.3 =9.99 X 0.02 =4.67 X 0.9 =5X2.44 =1.666 X 6.1 =9.432 X 0.002 =5.6 X 6.5 =4.88 X 2.9 =5.61 X4.3 =1.384 X 5.1 =8.78 X 83=2.6 X 61 =7.658 X 85=36.02 X 0.3=56.78 X 8 =0.059 X 0.2 =4.268 X 1.7 =57X5.7 =9.

2、46 X 2.85 =17.8 X 6.4 =1.5 X 4.9 =2.5 X 0.88 =5.555 X5.2 =2.22 X 3.33 =精品文檔51.3-0.27 =91.2-3.8 =0.756-0.18 =精品文檔除法：85.44-16=42.84-7 =101.7 *9 =67.5-15=230.4- 6 =21.24-36=0.736-23=43.5-12=35.21 -7 =39.6-24=6.21 -0.03 =2101.4 =0.66-0.3 =11.97-1.5 =69.6-2.9 =38.4- 0.8=15-0.06 =（循環(huán)小數(shù)的用簡(jiǎn)便方法，除不盡保留 2位小數(shù)）：4

3、.7-3 =1.25-1.2 =32-42=8.2-0.12 =0.8-0.9 =76.4- 5.4 =8.33 十 6.21.7-0.03 =2.41 -0.7 =精品文檔14.36-2.7 =0.396-1.2=0.756-0.36=計(jì)算0.18 X 15=0.025 X 14=3.06 X 36=15.6 X 13=0.04 X 0.12 =3.84X2.6 （保留一位小數(shù)）5.76X3 =精品文檔7.15 X 22=90.75-3.3 =3.68 X 0.25 =16.9-0.13 =1.55-3.9 =3.7 X 0.016 =13.76 X 0.8=5.2x 0.6 =8.4 X

4、1.3 =6.4 X 0.5 =4.48 X 0.4 =5.25 X 5 =35.4 X 4.2 =0.042 X 0.54 =0.76 X 0.32 =0.25 X 0.046 =2.52 X 3.4 =1.08 X 25=0.12 X 0.5 X 0.16 =4.8X0.25 =精品文檔0.125 X 1.4 （保留兩位小數(shù)）2.5十0.7（保留三位小數(shù)）精品文檔（用乘法驗(yàn)算）10.1 -3.3=（商用循環(huán)小數(shù)）10.75-12.5=3.25 X 9.04=（用除法驗(yàn)算）3、脫式計(jì)算（能簡(jiǎn)算的要簡(jiǎn)算）X0.9 +0.92.5 X7.1 X 416.12 X 99+16.125.27.28

5、X 99+7.284.3X 50X0.264-2.64 X0.526 X 15.7 + 15.7 X24(2.275+ 0.625) X0.283.94+34.3 X 0.21.2X(9.6 -2.4) -4.88.9 X 1.1 X4.72.7 X 5.4 X 3.93.6 X 9.85 -5.468.05 X3.4+7.66.58 X 4.5 X 0.92.8X 0.5+1 .5832 + 4.9 0.94.8-4.8 X0.5(1.25-0.125) X8精品文檔4.8 X 100.156.5X 99+56.57.09X10.8-0.8 X7.094.85 + 0.35- 1.48.7 X 17.4-X 7.412.5 X 0.4 X 2.5 X 80.87 X 3.16+4.649.5 X 1010.68 - (5.2 -3.5 ) X 1.2540.5-0.81x 0.18精品文檔4.4 X0.8 3.4 X0.8(9.37+9. 37+9. 37+9. 37) X 2 . 52.37 X 6.3+2.37 X 3.72.5 X 1.25 X 0.32精品文檔0.25 X 39+0.250.125 X 7246X0.33+54X0.33(8 X 5.27) X 1.256.81+6.8