简便计算所有题型的简便计算,

2025-03-31 21:53:51
推荐回答(1个)
回答1:

472+503
=472+500+3
=972+3
=975

143+(57+26)
=143+57+26
=200+26
=226

78-46-14
=78-(46+14)
=78-60
=18

32×125
=4×8×125
=4×(8×125)
=4×1000
=4000

3×125×8
=3×(125×8)
=3×1000
=3000