| 直接写出得数. ①1÷ = | ②3-1 = | ③ ×3= | ④3.6× = |
⑤ +3.75= | ⑥ - = | ⑦1-2÷7= | ⑧36×( + )= |
①1÷ = , | ②3-1 =1 , | ③ ×3= , | ④3.6× =1.6, |
⑤ +3.75=4, | ⑥ - = , | ⑦1-2÷7= , | ⑧36×( + )=10. |
分析:④3.6×
直接约分求解;⑤
+3.75先把分数化成小数,再计算;⑦1-2÷7先算除法,再算减法;⑧36×(
+
)运用乘法分配律简算;其它题目根据运算法则直接求解.点评:本题考查了基本的计算,计算时要细心,注意把运算结果化成最简分数.
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