用简便方法计算. 168-52-48 125×88 1300÷25÷4 37+125+63+175 156×l0l-156 8×29×l2
用简便方法计算.168-52-48125×881300÷25÷437+125+63+175156×l0l-1568×29×l25....
用简便方法计算. 168-52-48 125×88 1300÷25÷4 37+125+63+175 156×l0l-156 8×29×l25.
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(1)168-52-48
=168-(52+48)
=168-100
=68;
(2)125×88
=125×(8×11)
=125×8×11
=1000×11
=11000;
(3)1300÷25÷4
=1300÷(25×4)
=1300÷100
=13;
(4)37+125+63+175
=(37+63)+(125+175)
=100+300
=400;
(5)156×l0l-156
=156×(101-1)
=156×100
=15600;
(6)8×29×l25
=8×125×29
=1000×29
=29000.
=168-(52+48)
=168-100
=68;
(2)125×88
=125×(8×11)
=125×8×11
=1000×11
=11000;
(3)1300÷25÷4
=1300÷(25×4)
=1300÷100
=13;
(4)37+125+63+175
=(37+63)+(125+175)
=100+300
=400;
(5)156×l0l-156
=156×(101-1)
=156×100
=15600;
(6)8×29×l25
=8×125×29
=1000×29
=29000.
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