Question

b162b
(9) \

$$\begin{array}{r} 142 \\\\ -\\phantom{0}12 \\end{array}$$

(14) \

$$\begin{array}{r} 242 \\\\ -\\phantom{0}12 \\end{array}$$

(10) \

$$\begin{array}{r} 142 \\\\ -\\phantom{0}15 \\end{array}$$

(15) \

$$\begin{array}{r} 242 \\\\ -\\phantom{0}15 \\end{array}$$

(11) \

$$\begin{array}{r} 142 \\\\ -\\phantom{0}27 \\end{array}$$

(16) \

$$\begin{array}{r} 242 \\\\ -\\phantom{0}27 \\end{array}$$

(12) \

$$\begin{array}{r} 142 \\\\ -\\phantom{0}26 \\end{array}$$

(17) \

$$\begin{array}{r} 242 \\\\ -\\phantom{0}26 \\end{array}$$

(13) \

$$\begin{array}{r} 142 \\\\ -\\phantom{0}38 \\end{array}$$

(18) \

$$\begin{array}{r} 242 \\\\ -\\phantom{0}38 \\end{array}$$

b163a kumon
subtraction of 3-digit numbers 1
subtract.
(1) \

$$\begin{array}{r} 130 \\\\ -\\phantom{0}10 \\end{array}$$

(5) \

$$\begin{array}{r} 230 \\\\ -\\phantom{0}10 \\end{array}$$

(2) \

$$\begin{array}{r} 130 \\\\ -\\phantom{0}30 \\end{array}$$

(6) \

$$\begin{array}{r} 230 \\\\ -\\phantom{0}30 \\end{array}$$

(3)* \

$$\begin{array}{r} 130 \\\\ -\\phantom{0}40 \\end{array}$$

(7) \

$$\begin{array}{r} 230 \\\\ -\\phantom{0}40 \\end{array}$$

(4) \

$$\begin{array}{r} 130 \\\\ -\\phantom{0}60 \\end{array}$$

(8) \

$$\begin{array}{r} 230 \\\\ -\\phantom{0}60 \\end{array}$$

Explanation:

Calculate column subtraction for page B162b

$$
LATEXBLOCK0
$$

Calculate column subtraction for page B163a

$$
LATEXBLOCK1
$$

Answer:

No.	Problem	Answer
(10)	\(142 - 15\)	\(127\)
(11)	\(142 - 27\)	\(115\)
(12)	\(142 - 26\)	\(116\)
(13)	\(142 - 38\)	\(104\)
(14)	\(242 - 12\)	\(230\)
(15)	\(242 - 15\)	\(227\)
(16)	\(242 - 27\)	\(215\)
(17)	\(242 - 26\)	\(216\)
(18)	\(242 - 38\)	\(204\)
(1)	\(130 - 10\)	\(120\)
(2)	\(130 - 30\)	\(100\)
(3)	\(130 - 40\)	\(90\)
(4)	\(130 - 60\)	\(70\)
(5)	\(230 - 10\)	\(220\)
(6)	\(230 - 30\)	\(200\)
(7)	\(230 - 40\)	\(190\)
(8)	\(230 - 60\)	\(170\)