Question

b147b
(9)
\

$$\begin{array}{r} 61 \\\\ - 21 \\\\ \\hline 40 \\end{array}$$

(14)
\

$$\begin{array}{r} 64 \\\\ - 35 \\\\ \\hline \\end{array}$$

(10)
\

$$\begin{array}{r} 61 \\\\ - 28 \\\\ \\hline \\end{array}$$

(15)
\

$$\begin{array}{r} 64 \\\\ - 37 \\\\ \\hline \\end{array}$$

(11)
\

$$\begin{array}{r} 61 \\\\ - 46 \\\\ \\hline \\end{array}$$

(16)
\

$$\begin{array}{r} 64 \\\\ - 59 \\\\ \\hline \\end{array}$$

(12)
\

$$\begin{array}{r} 61 \\\\ - 43 \\\\ \\hline \\end{array}$$

(17)
\

$$\begin{array}{r} 64 \\\\ - 58 \\\\ \\hline \\end{array}$$

(13)
\

$$\begin{array}{r} 61 \\\\ - 47 \\\\ \\hline \\end{array}$$

(18)
\

$$\begin{array}{r} 64 \\\\ - 62 \\\\ \\hline \\end{array}$$

b148a kumon
subtraction of 2-digit numbers 3
subtract
(1)
\

$$\begin{array}{r} 72 \\\\ - 31 \\\\ \\hline \\end{array}$$

(5)
\

$$\begin{array}{r} 75 \\\\ - 46 \\\\ \\hline \\end{array}$$

(2)
\

$$\begin{array}{r} 72 \\\\ - 30 \\\\ \\hline \\end{array}$$

(6)
\

$$\begin{array}{r} 75 \\\\ - 44 \\\\ \\hline \\end{array}$$

(3)
\

$$\begin{array}{r} 72 \\\\ - 32 \\\\ \\hline \\end{array}$$

(7)
\

$$\begin{array}{r} 75 \\\\ - 47 \\\\ \\hline \\end{array}$$

(4)
\

$$\begin{array}{r} 72 \\\\ - 47 \\\\ \\hline \\end{array}$$

(8)
\

$$\begin{array}{r} 75 \\\\ - 69 \\\\ \\hline \\end{array}$$

Explanation:

Calculate page B147b column 1

$$
LATEXBLOCK0
$$

Calculate page B147b column 2

$$
LATEXBLOCK1
$$

Calculate page B148a columns 1 and 2

$$
LATEXBLOCK2
$$

Answer:

No.	Problem	Answer
(10)	\(61 - 28\)	\(33\)
(11)	\(61 - 46\)	\(15\)
(12)	\(61 - 43\)	\(18\)
(13)	\(61 - 47\)	\(14\)
(14)	\(64 - 35\)	\(29\)
(15)	\(64 - 37\)	\(27\)
(16)	\(64 - 59\)	\(5\)
(17)	\(64 - 58\)	\(6\)
(18)	\(64 - 62\)	\(2\)
(1)	\(72 - 31\)	\(41\)
(2)	\(72 - 30\)	\(42\)
(3)	\(72 - 32\)	\(40\)
(4)	\(72 - 47\)	\(25\)
(5)	\(75 - 46\)	\(29\)
(6)	\(75 - 44\)	\(31\)
(7)	\(75 - 47\)	\(28\)
(8)	\(75 - 69\)	\(6\)