Question

3.3×25+2.5×7简便方法？

Answer 1

根据题意，这道题用到的简便计算方法是乘法分配律和乘法结合律，计算方法如下：原式=33*2.5+7*2.5=（33+7）*2.5=40*2.5=100。

Answer 2

3.3×25+2.5×7可以应用乘法分配律进行简便计算
3.3×25+2.5×7
=33×0.1×25+2.5×7
=33×2.5+2.5×7
=（33+7）×2.5
=40×2.5
=100

Answer 3

运算的基本规则，是先乘除后加减，有括号先算括号内（在有乘方的题目里，乘方最先算）

3.3×25+2.5×7

=33×2.5+2.5×7

=2.5×（33+7）

=2.5×40

=25×4

=100

Answer 4

你好，这道题可以把3.3×25变成33×2.5，也可以把2.5×7变成25×0.7那么这道题就等于3.3×25+2.5×7=33×2.5+2.5×7=（33+7）×2.5=40×2.5=100或者3.3×25+2.5×7=3.3×25+25×0.7=（3.3+0.7）×25=4×25=100

Answer 5

3.3x25+2.5x7=3.3x25+25x0.7=(3.3+0.7)25=4x25=100