Question

12.25-3.1+0.85-6.17 用简便方法计算

Answer 1

12.25-3.1+0.85-6.17 用简便方法计算

12.25-3.1+0.85-6.17
=12.25+0.85-3.1-6.17
=13.1-3.1-6.17
=10-6.17
=3.83

12.5-3.1十0.85－6.17怎简便计算

12.5-3.1十0.85－6.17
=(12.5-3.1)十(0.85－6.17)
=9.4-6.17+0.85
=3.23+0.85
=4.08

26.3-5.98+6.17用简便方法计算

26.3-5.98+6.17
=26.3+6.17-5.98
=32.47-5.98
=32.47-6+0.02
=26.47+0.02
=26.49

(4.3+6.17)0.8用简便方法计算

(4.3+6.17)0.8
=10.47x8/10
=83.76/10
=8.376

6.17-3.6-1.74简便方法计算

6.17-3.6-1.74
=6.17-（3.6+1.74）
=6.17-5.34
=6.17-6+0.66
=0.83

12.25+36+7点用简便方法计算

12.25+36+7
=12.25+（36+7）
=12.25+43
=55.25

用简便方法计算，0.95*1.6-0.85*1.6

0.95*1.6-0.85*1.6
=（0.95-0.85）*1.6
=0.1*1.6
=0.16

用简便方法计算2.4*1.5+24*0.85

原式
=2.4x1.5+24x0.85
=2.4x1.5+2.4x8.5
=2.4x(1.5+8.5)
=2.4x10
=24
供参考。

简便方法计算0.34×15 3.4×0.85

题目应该是：0.34×15+34×0.85，否则不能进行简便计算。
0.34×15+34×0.85
=34×0.15+34×0.85
=34×(0.15+0.85)
=34×1
=34

90-(4.15-2.5 0.85)用简便方法计算

90-(4.15-2.5+0.85) =90-(4.15+0.85-2.5) =90-(5-2.5) =90-2.5 =87.5