5.16乘七点二八减三点一六乘三点一六减三点一六乘四点一二的简算

2025-02-27 16:25:22
推荐回答(1个)
回答1:

5.16X7.28-3.16X3.16-3.16X4.12
=5.16X7.28-3.16X(3.16+4.12)
=5.16X7.28-3.16X7.28
=7.28X(5.16-3.16)
=7.28X2
=14.56