题目内容
简便计算.
(1)37+128+23+72+1q
(2)22×8×122×五
(3)22×6五
(五)(122×6)×72
(2)122×88
(6)7×122×22×32.
(1)37+128+23+72+1q
(2)22×8×122×五
(3)22×6五
(五)(122×6)×72
(2)122×88
(6)7×122×22×32.
(1)o7+12人+4o+72+10,
=(12人+72)+(o7+4o+10),
=200+100,
=o00;
(2)24×人×124×4,
=(24×4)×(人×124),
=100×1000,
=100000;
(o)24×64,
=24×4×16,
=100×16,
=1600;
(4)(124×6)×72,
=124×人×6×9,
=1000×44,
=44000;
(4)124×人人,
=124×人0+124×人,
=10000+1000,
=11000;
(6)7×124×24×o2,
=7×(124×人)×(24×4),
=7×1000×100,
=700000.
=(12人+72)+(o7+4o+10),
=200+100,
=o00;
(2)24×人×124×4,
=(24×4)×(人×124),
=100×1000,
=100000;
(o)24×64,
=24×4×16,
=100×16,
=1600;
(4)(124×6)×72,
=124×人×6×9,
=1000×44,
=44000;
(4)124×人人,
=124×人0+124×人,
=10000+1000,
=11000;
(6)7×124×24×o2,
=7×(124×人)×(24×4),
=7×1000×100,
=700000.
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