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脱式计算:42×15+136800-981÷9(125+275)÷825×(187-143)392÷(45-38)(26+34)×78150-90÷325×2×11.

题目详情
脱式计算:
42×15+136  800-981÷9  (125+275)÷8 25×(187-143)
392÷(45-38) (26+34)×78 150-90÷3   25×2×11.
▼优质解答
答案和解析
(1)42×15+136,
=630+136,
=766;

(2)800-981÷9,
=800-109,
=691;

(3)(125+275)÷8,
=400÷8,
=50;

(4)25×(187-143),
=25×44,
=25×4×11,
=100×11,
=1100;

(5)392÷(45-38),
=392÷7,
=56;

(6)(26+34)×78,
=60×78,
=4680;

(7)150-90÷3,
=150-30,
=120;

(8)25×2×11,
=50×11,
=550.