4.7*3.56+2.5*3.56+6.44*7.2(簡便運算)
題目:
4.7*3.56+2.5*3.56+6.44*7.2(簡便運算)
解答:
4.7*3.56+2.5*3.56+6.44*7.2
=(4.7+2.5)*3.56+6.44*7.2
=7.2*3.56+6.44*7.2
=7.2*(3.56+6.44)
=7.2*10
=72
- 上一篇 2010年S版小學升中學語文數學英語的試卷問題
- 下一篇 65*65/66簡便運算
題目:
4.7*3.56+2.5*3.56+6.44*7.2(簡便運算)
解答:
4.7*3.56+2.5*3.56+6.44*7.2
=(4.7+2.5)*3.56+6.44*7.2
=7.2*3.56+6.44*7.2
=7.2*(3.56+6.44)
=7.2*10
=72
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