试题:
用你喜欢的方法计算.
1000-25×16+98
34×21+166×21
48×(129+56)-345
(85+79)×(85-79)
968-(118×24-1890)
156×37-56×37.

答案:

我来补答
(1)1000-25×16+98,
=1000-25×4×4+98,
=1000-400+98,
=698;

(2)34×21+166×21,
=(34+166)×21,
=200×21,
=4200;

(3)48×(129+56)-345,
=48×185-345,
=8880-345,
=8535;

(4)(85+79)×(85-79),
=164×6,
=984;

(5)968-(118×24-1890),
=968-(2832-1890),
=968-942,
=26;

(6)156×37-56×37,
=(156-56)×37,
=100×37,
=3700.
 
 
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这些题目你会做吗?