题目内容
| 算一算,比一比. 75×6+75×4 | 420+30÷15-5 | (32+18)×(60-40) |
| 75×(6+4) | (420+30)÷(15-5) | 32+18×(60-40) |
(1)75×6+75×4
=450+300
=750;
75×(6+4)
=75×10
=750;
(2)420+30÷15-5
=420+2-5
=422-5
=417;
(420+30)÷(15-5)
=450÷10
=45;
(3)(32+18)×(60-40)
=50×20
=1000;
32+18×(60-40)
=32+18×20
=32+360
=392.
=450+300
=750;
75×(6+4)
=75×10
=750;
(2)420+30÷15-5
=420+2-5
=422-5
=417;
(420+30)÷(15-5)
=450÷10
=45;
(3)(32+18)×(60-40)
=50×20
=1000;
32+18×(60-40)
=32+18×20
=32+360
=392.
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