Question

b150a kumon
subtraction of 2-digit numbers 3

subtract.
(1) \

$$\begin{array}{r} 63 \\\\ - 20 \\end{array}$$

(5) \

$$\begin{array}{r} 72 \\\\ - 33 \\end{array}$$

(2) \

$$\begin{array}{r} 63 \\\\ - 25 \\end{array}$$

(6) \

$$\begin{array}{r} 72 \\\\ - 51 \\end{array}$$

(3) \

$$\begin{array}{r} 63 \\\\ - 48 \\end{array}$$

(7) \

$$\begin{array}{r} 72 \\\\ - 57 \\end{array}$$

(4) \

$$\begin{array}{r} 63 \\\\ - 36 \\end{array}$$

(8) \

$$\begin{array}{r} 72 \\\\ - 64 \\end{array}$$

Explanation:

Calculate B149b column subtractions

$$
LATEXBLOCK0
$$

Calculate B150a column subtractions

$$
LATEXBLOCK1
$$

Answer:

Page B149b

No.	Problem	Answer
(10)	\(92 - 44\)	\(48\)
(11)	\(92 - 63\)	\(29\)
(12)	\(92 - 69\)	\(23\)
(13)	\(92 - 88\)	\(4\)
(14)	\(96 - 58\)	\(38\)
(15)	\(96 - 59\)	\(37\)
(16)	\(96 - 77\)	\(19\)
(17)	\(96 - 74\)	\(22\)
(18)	\(96 - 91\)	\(5\)

Page B150a

No.	Problem	Answer
(2)	\(63 - 25\)	\(38\)
(3)	\(63 - 48\)	\(15\)
(4)	\(63 - 36\)	\(27\)
(5)	\(72 - 33\)	\(39\)
(6)	\(72 - 51\)	\(21\)
(7)	\(72 - 57\)	\(15\)
(8)	\(72 - 64\)	\(8\)