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98×19975×99+2×7583×102-83×250×(34×4)×325×(24+16)
题目详情
98×199
75×99+2×75
83×102-83×2
50×(34×4)×3
25×(24+16)
75×99+2×75
83×102-83×2
50×(34×4)×3
25×(24+16)
▼优质解答
答案和解析
98×199
=(100-2)×199
=100×199-2×199
=19900-398
=19502;
75×99+2×75
=75×(99+2)
=75×(100+1)
=75×100+75×1
=7500+75
=7575;
83×102-83×2
=83×(102-2)
=83×100
=8300;
50×(34×4)×3
=(50×4)×(34×3)
=200×102
=20400;
25×(24+16)
=25×40
=1000.
=(100-2)×199
=100×199-2×199
=19900-398
=19502;
75×99+2×75
=75×(99+2)
=75×(100+1)
=75×100+75×1
=7500+75
=7575;
83×102-83×2
=83×(102-2)
=83×100
=8300;
50×(34×4)×3
=(50×4)×(34×3)
=200×102
=20400;
25×(24+16)
=25×40
=1000.
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