小马虎在计算一道题目时,把某数乘3加20,误看成某数除以3减20,得数是72.某数是多少?正确的得数是多少

2024-12-19 01:02:33
推荐回答(2个)
回答1:

(1)某数是:
(72+20)×3,
=92×3,
=276,
正确的得数是:
276×3+20,
=828+20,
=848.
答:某数是276,正确的得数是848.

(2)(1740-25)÷49,
=1715÷49,
=35;
7140÷35=204;
答:正确的商是204.

回答2:

某数:(72+20)×3=276
正确得数:276×6×3+20=848