8x7x12用简便方法计算
8X7X12怎样简便 -
= 56x 10 + 56x2 = 560 + 112 = 672
回答:8=4X2 4x12X2x7
= 56x 10 + 56x2 = 560 + 112 = 672
回答:8=4X2 4x12X2x7
=8x7x12 =56x12 =56x10+56x2 =560+112 =672 供参考。
回答:原式=8*7*(10+2) =56*10+56*2 =560+112 =672
8x7x12简便运算怎么算什么 -
=8×12×7 =96×7 =(100-4)×7 =100×7-4×7 =700-28 =672
回答:7×12×8=7×96=7×(100-4)=7×100-7×4=700-28=672
8X7X12用简便方法计算 -
先用8乘7等于56,在用56乘10在乘2
回答:8×(5+2)×12
8x7x125x3的简便计算? -
原式=(8*125)(3*7)1000*21 =21000 如有帮助望采纳,谢谢!
回答:8x-7*12=41 8x -84=41 8x=125 x=125/8