÷1= | 2- = | 1.8× = | 39÷ = |
| 7-2.36-1.64= | 5÷7+ = | 1+45%= | ×3÷ ×3= |
| 32+23= | = |
解: ÷1= , | 2- =1 , | 1.8× =1.2, | 39÷ =30, |
| 7-2.36-1.64=3, | 5÷7+ =1, | 1+45%=1.45, | ×3÷ ×3=9, |
| 32+23=17, | =0.8. |
故答案为:
,1
,1.2,30,3,1,1.45,9,17,0.8.
分析:7-2.36-1.64根据连续减去两个数等于减去这两个数的和简算;5÷7+
先算除法,再算加法;1+45%先把45%化成小数再计算;
×3÷
×3按照从左到右的顺序计算;32+23,32+23表示3×3+2××2×2;
先把分数化成小数再计算;其它题目根据运算法则直接求解.点评:本题考查了基本的运算;计算时要细心,注意运算顺序.
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