**Question 1:**
Calculate: $\left(2\times 15+66\right):4-2$

**Question 2:**
Remove brackets: $\left(2c+d\right)2$

**Question 3:**
Calculate the value of the expression $3\times 20+5a-2a$
when $a=2$

**Question 4:**
How the sum will change if one of the terms increases by $273$
?

**Question 5:**
Subtract: $17m5cm-12m$

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