脱式计算,能简算的要简算32.54-0.46-4.54 7.6×99+7.6102×26-26 98×46.
(1)32.54-0.46-4.54
=32.54-(0.46+4.54)
=32.54-5
=27.54;
(2)7.6×99+7.6
=7.6×(99+1)
=7.6×100
=760;
(3)102×26-26
=(102-1)×26
=101×26
=2626;
(4)98×46
=(100-2)×46
=100×46-2×46
=4600-92
=4508.
=32.54-(0.46+4.54)
=32.54-5
=27.54;
(2)7.6×99+7.6
=7.6×(99+1)
=7.6×100
=760;
(3)102×26-26
=(102-1)×26
=101×26
=2626;
(4)98×46
=(100-2)×46
=100×46-2×46
=4600-92
=4508.
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