题目内容
脱式计算.
| (270+402)×7 | 89+111×6 | 168÷8×3 | 75×(698-689) |
(1)(270+402)×7,
=672×7,
=4704;
(2)89+111×6,
=89+666,
=755;
(3)168÷8×3,
=21×3,
=63;
(4)75×(698-689),
=75×9,
=675.
=672×7,
=4704;
(2)89+111×6,
=89+666,
=755;
(3)168÷8×3,
=21×3,
=63;
(4)75×(698-689),
=75×9,
=675.
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