题目内容
把下面每组中的两个算式写成一个算式,再计算.
| (1)7×108=756 900-756=144 | (2)346-129=217415-217= |
(1)7×108=756,900-756=144,
900-7×108,
=900-756,
=144;
(2)346-129=217,415-217=198,
415-(346-129),
=415-217,
=198.
900-7×108,
=900-756,
=144;
(2)346-129=217,415-217=198,
415-(346-129),
=415-217,
=198.
练习册系列答案
相关题目