九又八分之7×8 8又七分之6×7 7又六分之5×6 6又五分之4×5?

2024-12-19 21:33:27
推荐回答(2个)
回答1:

= (9+7/8)×8 + (8+6/7)×7 + (7+5/6)×6 + (6+4/5)×5
= (72+7) + (56+6) + (42+5) + (30+4)
= 79 + 62 + 47 + 34
= 222

回答2:

9又7/8×8
=9×8+7/8×8
=72+7
=79