五年级简便算法55道 及答案

8乘（20减1.25)

32.875－(4.13＋3.875) 17.8 ÷2.5÷4 7.12×4－1.12×4 32×1.25×0.25
=32.875－3.875-4.13 = 17.8 ÷(2.5×4 ) =(7.12-1.12) ×4 =4×0.25+8×1.25
=29-4.13 =17.8÷10 =6 ×4 =1+10
=24 =11
= 24.87 =1.78
7.4×9.8－14.5 13.4+5.62+17.6+4.38
=72.52-14.5 =( 13.4+17.6)+( 5.62+4.38)
=58.02 =31+10
=41

6.73×4.8+5.2×6.73 (9.6+1.48÷3.7) ÷8
=(4.8+5.2) ×6.73 =(9.6+0.4) ÷8
=10×6.73 =10÷8
=67.3 =1.25