题目内容
| 560÷7-45= | 40÷8+13= | 28×4-69= |
| (172+38)÷3= | 27+9×27= | 100-450÷5= |
(1)560÷7-45
=80-45
=35
(2)40÷8+13
=5+13
=18
(3)28×4-69
=112-69
=43
(4)(172+38)÷3
=210÷3
=70
(5)27+9×27
=(1+9)×27
=10×27
=270
(6)100-450÷5
=100-90
=10
=80-45
=35
(2)40÷8+13
=5+13
=18
(3)28×4-69
=112-69
=43
(4)(172+38)÷3
=210÷3
=70
(5)27+9×27
=(1+9)×27
=10×27
=270
(6)100-450÷5
=100-90
=10
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