题目内容
| 432÷(9×8) | 216+
| ||
| 47+236+64 | 5+25×44 | ||
| 645-180-245. |
(1)432÷(9×8)
=432÷9÷8
=48÷8
=6;
(2)216+
=216+61
=277;
(3)47+236+64
=47+(236+64)
=47+300
=347;
(4)5+25×44
=5+25×(4×11)
=5+(25×4)×11
=5+100×11
=5+1100
=1105;
(5)645-180-245
=645-245-180
=400-180
=220.
=432÷9÷8
=48÷8
=6;
(2)216+
| 305 |
| 5 |
=216+61
=277;
(3)47+236+64
=47+(236+64)
=47+300
=347;
(4)5+25×44
=5+25×(4×11)
=5+(25×4)×11
=5+100×11
=5+1100
=1105;
(5)645-180-245
=645-245-180
=400-180
=220.
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