题目内容
| 混合运算. 60+55×2 | 90-90÷5 | 720÷8×9 |
| 18×(100-72) | (85+67)÷38 | 200-(48-29) |
(1)60+55×2
=60+110
=170;
(2)90-90÷5
=90-18
=72;
(3)720÷8×9
=90×9
=810;
(4)18×(100-72)
=18×28
=504;
(5)(85+67)÷38
=152÷38
=4;
(6)200-(48-29)
=200-19
=181.
=60+110
=170;
(2)90-90÷5
=90-18
=72;
(3)720÷8×9
=90×9
=810;
(4)18×(100-72)
=18×28
=504;
(5)(85+67)÷38
=152÷38
=4;
(6)200-(48-29)
=200-19
=181.
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