脱式计算(能用简便方法的就用简便方法计算) ①169÷13+124×5 ②243+26+274 ③35.24-(15.24

2025-02-23 05:10:43
推荐回答(2个)
回答1:

①169÷13+124×5,
=13+620,
=633;

②243+26+274,
=243+(26+274),
=243+300,
=543;

③35.24-(15.24+8.16),
=35.24-15.24-8.16,
=20-8.16,
=11.84;

④354-99,
=354-100+1,
=254+1,
=255;

⑤85.07-(15.3-4.8)+5.6,
=85.07-10.5+5.6,
=74.57+5.6,
=80.17;

⑥83×5+83×2+83×3,
=83×(5+2+3),
=83×10,
=830.

回答2:

64×(17+169÷13)