题目内容
计算:
| 63+294+37+54+6? | 276+165+724+187+435 |
(1)63+294+37+54+6,
=(63+37)+(294+6)+54,
=100+300+54,
=400+54,
=454;
(2)276+165+724+187+435,
=(276+724)+(165+435)+187,
=1000+600+187,
=1600+187,
=1787.
=(63+37)+(294+6)+54,
=100+300+54,
=400+54,
=454;
(2)276+165+724+187+435,
=(276+724)+(165+435)+187,
=1000+600+187,
=1600+187,
=1787.
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