题目内容

脱式计算(能简算的要简算)
403-198-2

720÷18

148-48×2
125×32×2576+149+24154-(54+98)
(1)403-198-2,
=403-(198+2),
=403-200,
=203;

(2)720÷18=40;

(3)148-48×2,
=148-96,
=52;

(4)125×32×25,
=125×8×4×25,
=(125×8)×(4×25),
=1000×100,
=100000;

(5)76+149+24,
=(76+24)+149,
=100+149,
=249;

(6)154-(54+98),
=154-54-98,
=(154-54)-98,
=100-98,
=2.
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