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运用简便方法使计算更简单127+44+7356+56×99435-(135+189)657+9963×43+57×6325×23×4360÷8÷552×102125×(8+80)
题目详情
127+44+73 | 56+56×99 | 435-(135+189) |
657+99 | 63×43+57×63 | 25×23×4 |
360÷8÷5 | 52×102 | 125×(8+80) |
▼优质解答
答案和解析
①127+44+73
=44+(127+73)
=44+200
=244;
②56+56×99
=56×(99+1)
=56×100
=5600;
③435-(135+189)
=435-135-189
=300-189
=111;
④657+99
=657+100-1
=756;
⑤63×43+57×63
=63×(43+57)
=63×100
=6300;
⑥25×23×4
=23×(25×4)
=23×100
=2300;
⑦360÷8÷5
=360÷(8×5)
=360÷40
=9;
⑧52×102
=52×(100+2)
=52×100+52×2
=5200+104
=5304;
⑨125×(8+80)
=125×8+125×80
=1000+10000
=11000.
=44+(127+73)
=44+200
=244;
②56+56×99
=56×(99+1)
=56×100
=5600;
③435-(135+189)
=435-135-189
=300-189
=111;
④657+99
=657+100-1
=756;
⑤63×43+57×63
=63×(43+57)
=63×100
=6300;
⑥25×23×4
=23×(25×4)
=23×100
=2300;
⑦360÷8÷5
=360÷(8×5)
=360÷40
=9;
⑧52×102
=52×(100+2)
=52×100+52×2
=5200+104
=5304;
⑨125×(8+80)
=125×8+125×80
=1000+10000
=11000.
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