问题 解答题
简便计算.
276+28+172+224164-83-1725×67×4
87000÷8÷12566×39+39×34125×56.
答案

(1)276+28+172+224

=276+224+(28+172)

=500+200

=700;

(2)164-83-17

=164-(83+17)

=164-100

=64;

(3)25×67×4

=25×4×67

=100×67

=6700;

(4)87000÷8÷125

=87000÷(8×125)

=87000÷1000

=87;

(5)66×39+39×34

=(66+34)×39

=100×39

=3900;

(6)125×56

=125×8×7

=1000×7

=7000.

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