简便计算
(17×28+12×17)×25
=17×(28+12)×25
=17×40×25
=17×(40×25)
=17×1000
=17000
括号4×237加63×4括号乘以25的巧算
括号4×237加63×4括号乘以25
=4*(237+63)+4*25
=4*300+100
=1300
原式等于25×4×(125×8)=100×1000=100000所以原式的计算结果为100000.
(93+28)x11
=121x(10+1)
=121x10+121
=1210+121
=1331
32×(125+250)
=32×125+32×250
=8×125×4+4×250×8
=1000×4+1000×8
=4000+8000
=12000
=(28÷7)x(76÷19)×(48÷8)
=4×4×6
=96
3.8×(0.27÷0.28)
=3.8×0.27÷0.28
=1.026÷0.28
≈3.664
25x(24+16)
=25×40
=1000
希望帮到你 望采纳 谢谢 加油
解: (25+72)×40
=97×40
=(100-3)×40
=100×40-3×40
=4000-120
=3880
(77+77+77×2)×25
=77×(1+1+2)×25
=77×4×25
=77×100
=7700