Question

add, subtract or fill in the missing numbers.
(1)
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$$\begin{array}{r} 12 \\\\ +\\quad 34 \\\\ \\hline \\boxed{4}\\boxed{6} \\end{array}$$

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(2)
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$$\begin{array}{r} 27 \\\\ +\\quad 52 \\\\ \\hline \\end{array}$$

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(3)
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$$\begin{array}{r} 32 \\\\ +\\quad 48 \\\\ \\hline \\end{array}$$

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(4)
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$$\begin{array}{r} 46 \\\\ +\\quad 27 \\\\ \\hline \\end{array}$$

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(5)
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$$\begin{array}{r} 46 \\\\ -\\quad 34 \\\\ \\hline \\end{array}$$

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(6)
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$$\begin{array}{r} 79 \\\\ -\\quad 52 \\\\ \\hline \\end{array}$$

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(7)
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$$\begin{array}{r} 80 \\\\ -\\quad 32 \\\\ \\hline \\end{array}$$

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(8)
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$$\begin{array}{r} 73 \\\\ -\\quad 27 \\\\ \\hline \\end{array}$$

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Explanation:

Solve addition problems (1) to (4)

$$
LATEXBLOCK0
$$

Solve subtraction problems (5) to (8)

$$
LATEXBLOCK1
$$

Answer:

No.	Problem	Answer
(2)	\(27 + 52\)	\(79\)
(3)	\(32 + 48\)	\(80\)
(4)	\(46 + 27\)	\(73\)
(5)	\(46 - 34\)	\(12\)
(6)	\(79 - 52\)	\(27\)
(7)	\(80 - 32\)	\(48\)
(8)	\(73 - 27\)	\(46\)