(7.8-4.6)*12.5*0.25(简便运算)
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(7.8-4.6)*12.5*0.25(简便运算)(7.8-4.6)*12.5*0.25(简便运算)(7.8-4.6)*12.5*0.25(简便运算)(7.8-4.6)*12.5*0.25=3.2*1
(7.8-4.6)*12.5*0.25(简便运算)
(7.8-4.6)*12.5*0.25(简便运算)
(7.8-4.6)*12.5*0.25(简便运算)
(7.8-4.6)*12.5*0.25
=3.2*12.5*0.25
=0.8*12.5*4*0.25
=10
=3.2×12.5×0.25
=0.8×4×12.5×0.25
=(0.8×12.5)×(4×0.25)
=10×1
=10
(7.8-4.6)*12.5*0.25(简便运算)
14.32-7.8 1.68-3.2 (2) 6.47*99+6.47 (3)12.5*32*0.25 能简便就简便
简便计算 19.3÷50÷2 360÷(3+1.8) 3.4×12.5+6.6×12.5 2.6÷0.25÷0.13 25×7.8×0.4×0.2
90/(3.6-1.8) 3.6/0.4-1.2*53.4*7.8/3.9 0.36/[(6.1-4.6)*0.8]54/(3.94+6.86) (3.2+0.12)/0.80.175/0.25*4 0.175/0.25/0.4
简算,2.02×8.5 1.25+4.6+0.75 1.6x7.5×1.25简算,2.02×8.5 1.25+4.6+0.75 1.6x7.5×1.25 56×1.25 3.4×7×1.5 0.8×0.25×0.4×12.5 (照片)
7.8/0.25/4 (简便计算)
0.25×(0.4+0.8)×12.5(递等式)
第4.6.7.8 题
4.6.7.8题,
1.2.4.6.7.8.9
求4.6.7.8
7.8+12.5+7.8简便运算
4.6×2.5+5.3×2.5+0.25=(简便运算)
0.25乘7.8+0.25乘2.2=0.25乘(7.8+2.2),这样算的依据是:
8.8除〔7.8+0.25乘(2.75+125%)〕
75-(6.8+0.32×0.25×12.5) 简便计算
3.2*12.5*0.25=() 用简便方法
8.5+1.7*0.42.84*(8.5-1.2)12.5*32*0.25