题目内容
| 脱式计算(能简算的要简算) 403-198-2 | 720÷18 | 148-48×2 |
| 125×32×25 | 76+149+24 | 154-(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.
=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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