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\(
5+15 \div 5=?
\)
5+3=8 (first division and then addition)
\(
10 \times 2+10^2 \div 5=?
\)
10 x 2 + 100/5 = 40 (exponent first and then multiplication, division and finally addition)
\(
12 \div 4+(3-2) \times 7=?
\)
\(
12 \div 4+(3-2) \times 7= 12 \div 4+(1) \times 7 = 3+1 \times 7=10
\)
\(
3^3 \div(15 \div 5)+(11 \times 2)=?
\)
\(
3^3 \div(15 \div 5)+(11 \times 2)=3^3 \div(3)+(22)=27\div3+22=9+22=31
\)
\(
\left(32 \div 2^2\right) \times(5-3)^3=?
\)
\(
\left(32 \div 2^2\right) \times(5-3)^3=\left(32 \div 4\right) \times(2)^3=\left(8\right) \times 8=64
\)
\(
(10+5 \times(5-3))-54 \div 9=?
\)
\(
\begin{aligned}
&=(10+5 \times 2)-54 \div 9 \\
&=(10+10)-54 \div 9 \\
&=20-54 \div 9 \\
&=20-6 \\
&=14
\end{aligned}
\)
\(
3 \times(77-(11 \times 3+4))=?
\)
\(
3 \times(77-(11 \times 3+4))=3 \times(77-37))=3 \times(40)=120
\)
\(
9^2+((15 \div 5) \times 19)-3^3=?
\)
\(
\begin{aligned}
&9^2+((15 \div 5) \times 19)-3^3 \\
&=9^2+(3 \times 19)-3^3 \\
&=9^2+57-3^3 \\
&=81+57-27 \\
&=138-27 \\
&=111
\end{aligned}
\)
\(
-8 \times(-5+3)-2^2=?
\)
\(
\begin{aligned}
&-8 \times(-5+3)-2^2 \\
&=-8 \times(-2)-2^2 \\
&=-8 \times(-2)-4 \\
&=16-4 \\
&=12
\end{aligned}
\)
\(
\{[3 \times(-2+3)] \times(-5)\}+2^3=?
\)
\(
\begin{aligned}
&\{[3 \times(-2+3)] \times(-5)\}+2^3 \\
&=\{[3 \times 1] \times(-5)\}+2^3 \\
&=\{3 \times(-5)\}+2^3 \\
&=-15+2^3 \\
&=-15+8 \\
&=-7
\end{aligned}
\)
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