Question

b146b
(9) \

$$\begin{array}{r} 42 \\\\ - 12 \\end{array}$$

(14) \

$$\begin{array}{r} 44 \\\\ - 26 \\end{array}$$

(10) \

$$\begin{array}{r} 42 \\\\ - 10 \\end{array}$$

(15) \

$$\begin{array}{r} 44 \\\\ - 24 \\end{array}$$

(11) \

$$\begin{array}{r} 42 \\\\ - 16 \\end{array}$$

(16) \

$$\begin{array}{r} 44 \\\\ - 29 \\end{array}$$

(12) \

$$\begin{array}{r} 42 \\\\ - 25 \\end{array}$$

(17) \

$$\begin{array}{r} 44 \\\\ - 35 \\end{array}$$

(13) \

$$\begin{array}{r} 42 \\\\ - 28 \\end{array}$$

(18) \

$$\begin{array}{r} 44 \\\\ - 37 \\end{array}$$

b147a kumon
subtraction of 2-digit numbers 3
subtract
(1) \

$$\begin{array}{r} 50 \\\\ - 10 \\end{array}$$

(5) \

$$\begin{array}{r} 55 \\\\ - 32 \\end{array}$$

(2) \

$$\begin{array}{r} 50 \\\\ - 15 \\end{array}$$

(6) \

$$\begin{array}{r} 55 \\\\ - 38 \\end{array}$$

(3) \

$$\begin{array}{r} 50 \\\\ - 24 \\end{array}$$

(7) \

$$\begin{array}{r} 55 \\\\ - 47 \\end{array}$$

(4) \

$$\begin{array}{r} 50 \\\\ - 22 \\end{array}$$

(8) \

$$\begin{array}{r} 55 \\\\ - 49 \\end{array}$$

Explanation:

Calculate page B146b column 1

$$
LATEXBLOCK0
$$

Calculate page B146b column 2

$$
LATEXBLOCK1
$$

Calculate page B147a columns 1 and 2

$$
LATEXBLOCK2
$$

Answer:

No.	Problem	Answer
(2)	\(50 - 15\)	\(35\)
(3)	\(50 - 24\)	\(26\)
(4)	\(50 - 22\)	\(28\)
(5)	\(55 - 32\)	\(23\)
(6)	\(55 - 38\)	\(17\)
(7)	\(55 - 47\)	\(8\)
(8)	\(55 - 49\)	\(6\)
(9)	\(42 - 12\)	\(30\)
(10)	\(42 - 10\)	\(32\)
(11)	\(42 - 16\)	\(26\)
(12)	\(42 - 25\)	\(17\)
(13)	\(42 - 28\)	\(14\)
(14)	\(44 - 26\)	\(18\)
(15)	\(44 - 24\)	\(20\)
(16)	\(44 - 29\)	\(15\)
(17)	\(44 - 35\)	\(9\)
(18)	\(44 - 37\)	\(7\)