六年级下册小升初数学简便计算训练

六年级下册小升初数学简便计算训练


简介:
(1)27.15﹣13.7﹣6.3 =27.15﹣(13.7+6.3) =27.15﹣20 =7.15 (2)3.7×+6.3÷ =×(3.7+6.3) =×10 = (3)2.5×32×1.25 =(2.5×4)×(8×1.25) =10×10 =100 (4)﹣﹣ =﹣(+) =﹣1 = (5)125×8÷125×8 =125÷125×8×8 =125÷125×(8×8) =1×64=64 (6)(1.6+1.6+1.6+1.6)×25 =(1.6×4)×25 =1.6×(4×25) =1.6×100=160