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计算:32×25×125484-286-141+2+3+4+5+…+99+1009+99+999+99992356-(1356-721)6×(120-200÷25)

题目详情
计算:
32×25×125 484-286-14 1+2+3+4+5+…+99+100
9+99+999+9999 2356-(1356-721) 6×(120-200÷25)
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答案和解析
(1)32×25×125,
=8×4×25×125,
=(8×125)×(4×25),
=1000×100,
=100000;

(2)484-286-14,
=484-(286+14),
=484-300,
=184;

(3)1+2+3+4+5+…+99+100,
=(1+100)+(2+99)+…+(49+52)+(50+51),
=101×50,
=5050;

(4)9+99+999+9999,
=(10-1)+(100-1)+(1000-1)+(10000-1),
=(10+100+1000+10000)-(1+1+1+1),
=11110-4,
=11106;

(5)2356-(1356-721),
=2356-1356+721,
=1000+721,
=1721;

(6)6×(120-200÷25),
=6×(120-8),
=6×112,
=672.