Question

b190b

(9)
\\
\

$$\begin{array}{r} 423 \\\\ -276 \\\\ \\hline \\end{array}$$

\\

(13)
\\
\

$$\begin{array}{r} 512 \\\\ -135 \\\\ \\hline \\end{array}$$

\\

(10)
\\
\

$$\begin{array}{r} 423 \\\\ -277 \\\\ \\hline \\end{array}$$

\\

(14)
\\
\

$$\begin{array}{r} 512 \\\\ -138 \\\\ \\hline \\end{array}$$

\\

(11)
\\
\

$$\begin{array}{r} 423 \\\\ -278 \\\\ \\hline \\end{array}$$

\\

(15)
\\
\

$$\begin{array}{r} 512 \\\\ -249 \\\\ \\hline \\end{array}$$

\\

(12)
\\
\

$$\begin{array}{r} 423 \\\\ -279 \\\\ \\hline \\end{array}$$

\\

(16)
\\
\

$$\begin{array}{r} 512 \\\\ -123 \\\\ \\hline \\end{array}$$

\\

Explanation:

Calculate column subtraction for questions 9 to 12

$$
LATEXBLOCK0
$$

Calculate column subtraction for questions 13 to 16

$$
LATEXBLOCK1
$$

Answer:

No.	Problem	Answer
(10)	\(423 - 277\)	\(146\)
(11)	\(423 - 278\)	\(145\)
(12)	\(423 - 279\)	\(144\)
(13)	\(512 - 135\)	\(377\)
(14)	\(512 - 138\)	\(374\)
(15)	\(512 - 249\)	\(263\)
(16)	\(512 - 123\)	\(389\)