小学四年级数学用简便方法计算：365x42.1+957.9

Question

简便方法计算

17.3-15.6+( ) 35.78+( )+12.65 365x42.1+957.9
=17.3+( )-15.6 =35.78+(( )+12.65) =
=( )-15.6 =35.78+( ) =
=( ) =( )

Answer 1

17.3-15.6+( 2.7 ) 35.78+( 7.35 )+12.65 365+42.1+957.9
=17.3+(2.7 )-15.6 =35.78+(( 7.35 )+12.65) = 365 +（42.1+957.9）
=( 20 )-15.6 =35.78+( 20 ) =365+1000
=( 4.4 ) =( 55.78 ) =1365

Answer 2

(364+1)X42.1+957.9本回答被网友采纳

Answer 3

题目意思可以明确一点吗？

Answer 4

用计算器