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简便计算.125×(8+4)38×25×8927+236+16425×36101×49-49409-258-42
题目详情
简便计算.
125×(8+4) 38×25×8 927+236+164 25×36 101×49-49 409-258-42 125×(8+4) 38×25×8 927+236+164 125×(8+4) 38×25×8 927+236+164 25×36 101×49-49 409-258-42 25×36 101×49-49 409-258-42
125×(8+4) | 38×25×8 | 927+236+164 |
25×36 | 101×49-49 | 409-258-42 |
125×(8+4) | 38×25×8 | 927+236+164 |
25×36 | 101×49-49 | 409-258-42 |
▼优质解答
答案和解析
(1)125×(8+4)
=125×8+125×4
=1000+500
=1500;
(2)38×25×8
=38×(25×8)
=38×200
=7600;
(3)927+236+164
=927+(236+164)
=927+400
=1327;
(4)25×36
=25×4×9
=100×9
=900;
(5)101×49-49
=(101-1)×49
=100×49
=4900;
(6)409-258-42
=409-(258+42)
=409-300
=109.
=125×8+125×4
=1000+500
=1500;
(2)38×25×8
=38×(25×8)
=38×200
=7600;
(3)927+236+164
=927+(236+164)
=927+400
=1327;
(4)25×36
=25×4×9
=100×9
=900;
(5)101×49-49
=(101-1)×49
=100×49
=4900;
(6)409-258-42
=409-(258+42)
=409-300
=109.
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