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怎样简便就怎样算;49×99+49168-52-48125×881300÷25÷4156×l0l-15699×4537+125+63+17599×56+56-462688-534+348×(29×l25)
题目详情
怎样简便就怎样算; 49×99+49 | 168-52-48 |
125×88 | 1300÷25÷4 |
156×l0l-156 | 99×45 |
37+125+63+175 | 99×56+56-46 |
2688-534+34 | 8×(29×l25) |
怎样简便就怎样算; 49×99+49 | 168-52-48 |
125×88 | 1300÷25÷4 |
156×l0l-156 | 99×45 |
37+125+63+175 | 99×56+56-46 |
2688-534+34 | 8×(29×l25) |
49×99+49
49×99+49
▼优质解答
答案和解析
(1)49×99+49
=49×(99+1)
=49×100
=4900;
(2)168-52-48
=168-(52+48)
=168-100
=68;
(3)125×88
=125×8×11
=1000×11
=11000;
(4)1300÷25÷4
=1300÷(25×4)
=1300÷100
=13;
(5)156×l0l-156
=156×(l0l-1)
=156×100
=15600;
(6)99×45
=(100-1)×45
=100×45-1×45
=4500-45
=4455;
(7)37+125+63+175
=(37+63)+(125+175)
=100+300
=400;
(8)99×56+56-46
=(99+1)×56-46
=100×56-46
=5600-46
=5554;
(9)2688-534+34
=2688-(534-34)
=2688-500
=2188;
(10)8×(29×l25)
=(8×125)×29
=1000×29
=29000.
=49×(99+1)
=49×100
=4900;
(2)168-52-48
=168-(52+48)
=168-100
=68;
(3)125×88
=125×8×11
=1000×11
=11000;
(4)1300÷25÷4
=1300÷(25×4)
=1300÷100
=13;
(5)156×l0l-156
=156×(l0l-1)
=156×100
=15600;
(6)99×45
=(100-1)×45
=100×45-1×45
=4500-45
=4455;
(7)37+125+63+175
=(37+63)+(125+175)
=100+300
=400;
(8)99×56+56-46
=(99+1)×56-46
=100×56-46
=5600-46
=5554;
(9)2688-534+34
=2688-(534-34)
=2688-500
=2188;
(10)8×(29×l25)
=(8×125)×29
=1000×29
=29000.
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