
递等式计算(能巧算的用巧算)(1)1442÷103×(165-125)(2)143×78-78×43(4)88×125(5)126+745
递等式计算(能巧算的用巧算)(1)1442÷103×(165-125)(2)143×78-78×43(4)88×125(5)126+745+374+155(6)96×20...
递等式计算(能巧算的用巧算)(1)1442÷103×(165-125)(2)143×78-78×43(4)88×125(5)126+745+374+155(6)96×201.
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(1)1442÷103×(165-125),
=1442÷103×40,
=14×40,
=560;
(2)143×78-78×43,
=(143-43)×78,
=100×78,
=7800;
(3)88×125,
=80×125+8×125,
=10000+1000,
=11000;
(4)126+745+374+155,
=(126+374)+(745+155),
=500+900,
=1400;
(5)96×201,
=96×200+96×1,
=19200+96,
=19296.
=1442÷103×40,
=14×40,
=560;
(2)143×78-78×43,
=(143-43)×78,
=100×78,
=7800;
(3)88×125,
=80×125+8×125,
=10000+1000,
=11000;
(4)126+745+374+155,
=(126+374)+(745+155),
=500+900,
=1400;
(5)96×201,
=96×200+96×1,
=19200+96,
=19296.
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