题目内容
脱式计算
| 30-15÷3 | 36÷4-6 | 56+34-28 | (100-99)×7 | 45-45÷9 | 72-3×7. |
(1)30-15÷3,
=30-5,
=25;
(2)36÷4-6,
=9-6,
=3;
(3)56+34-28,
=90-28,
=62;
(4)(100-99)×7,
=1×7,
=7;
(5)45-45÷9,
=45-5,
=40;
(6)72-3×7,
=72-21,
=51.
=30-5,
=25;
(2)36÷4-6,
=9-6,
=3;
(3)56+34-28,
=90-28,
=62;
(4)(100-99)×7,
=1×7,
=7;
(5)45-45÷9,
=45-5,
=40;
(6)72-3×7,
=72-21,
=51.
练习册系列答案
相关题目