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脱式计算(能简算的要简算). 1512-4512-3384.63+5811+5.64+131
问题详情
脱式计算(能简算的要简算).
参考答案
(1)1512-4512-338,
=11112-338,
=71724;
(2)4.63+5811+5.64+1311,
=(4.63+5.64)+(5811+1311),
=10.27+7,
=17.27;
(3)957-(2113+457+1113),
=(957-457)-(2113+1113)),
=5-21213,
=2113;
(4)1811-(711+38),
=1811-711-38,
=1-38,
=58;
(5)79+310-29+1710,
=(79-29)+(310+1710),
=59+2,
=259;
(6)1511-38-58,
=1511-(38+58),
=1511-1,
=411.
考点: