题目内容
| 脱式计算,第一步很重要. 204×5-568 | (207+32)×4 |
| 2451-2451÷3 | 6408÷(72-66) |
| 1025×8÷5 | 228×4-4. |
(1)204×5-568
=1020-568
=452;
(2)(207+32)×4
=239×4
=956;
(3)2451-2451÷3
=2451-817
=1634;
(4)6408÷(72-66)
=6408÷6
=1068;
(5)1025×8÷5
=8200÷5
=1640;
(6)228×4-4
=912-4
=908.
=1020-568
=452;
(2)(207+32)×4
=239×4
=956;
(3)2451-2451÷3
=2451-817
=1634;
(4)6408÷(72-66)
=6408÷6
=1068;
(5)1025×8÷5
=8200÷5
=1640;
(6)228×4-4
=912-4
=908.
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