问题
解答题
先估一估大约是多少,再列竖式算一算.
452×63______
915×46______
307×89______
625×37______.
答案
452×63≈27000;
915×46≈45000;
307×89≈27000;
625×37≈24000;
故答案为:27000,45000,27000,24000.
先估一估大约是多少,再列竖式算一算.
452×63______
915×46______
307×89______
625×37______.
452×63≈27000;
915×46≈45000;
307×89≈27000;
625×37≈24000;
故答案为:27000,45000,27000,24000.