问题
填空题
把下列加法式子转化成乘法式子.
①120+120+120+120+120=______×______;
②200+220+240+260=______×______.
答案
①120+120+120+120+120=120×5;
②200+220+240+260=920,
920÷4=230,
则200+220+240+260=230×4.
故答案为:120,5,230,4.
把下列加法式子转化成乘法式子.
①120+120+120+120+120=______×______;
②200+220+240+260=______×______.
①120+120+120+120+120=120×5;
②200+220+240+260=920,
920÷4=230,
则200+220+240+260=230×4.
故答案为:120,5,230,4.