2 Digit Numbers

Q.

The sum of the digits of a two digit number is 7. When 27 is subtracted from the number the digits of the number will reverse.

What is the original number?

1. 25

2. 52

3. 16

4. 61

Q.

The digits of a two digit number differ by 2. If the digits are interchanged and resulting number is added to the original number we get 88.

What is the original number?

Q.

If we subtract the sum of digits of any two digit number from the number we get a multiple of :

1. 3

2. 5

3. 9

4. 7

Q. Take a three digit number and reverse it, then subtract the larger number from the smaller number. This number is always divisible by which of the following numbers?

1. 2
2. 6
3. 8
4. 9

Q.

There are 2 two digit numbers such that one has been obtained by swapping the digits of the other.

On subtracting the smaller number from the larger number, I get a number divisible by :

1. 3

2. 4

3. 6

4. 12

Q.

Convert into litres

$9$KL , $49$ L

Q.

Add the following rational numbers:

(i) (3/4) and (-3/5)

(ii) -3 and (3/5)

Q.

The difference of a two–digit number and the number obtained by reversing its digits is always divisible by ___________.

Q. ab is a two digit number and a - b = 5. The sum of the 2-digit number ab and the number obtained by reversing its digits is 99. Find the number.

Q. General algebraic form of a two digit number ab is:

1. 10a + b
2. a + b
3. 10b + a
4. 2a + b

Q. Aarush asked Soham to take a two digit number and reverse it, then subtract the larger number from the smaller number. Soham did the same. This result will be always divisible by_____.

1. 5
2. 9
3. 2
4. 4

Q.

If the sum of a 2-digit number ab and the number obtained by reversing its digits is divided by 11, the remainder is ___.

1. 1

2. 2

3. 0

4. 11

Q.

43 = ___ x 4 + ___ x 3

1. 5, 2

2. 3, 8

3. 11, 6

4. 10, 1

Q. Simplify each of the following algebraic expressions by removing grouping symbols.
5a − (3b − 2a + 4c)

Q.

43 = ___ x 4 + ___ x 3

Q.

Find A in the addition, when B=1

$$\begin{array}{c}A\\ +A\\ +A\\ BA\end{array}$$

1. 1

2. 5

3. 3

4. 2

Q.

If a, b, c and d are divisible by x, then (a + b + c + d) is also divisible by x.

1. True

2. False

Q.

Kimmy has two thousand three hundred and sixty nine candies. Jimmy, on the other hand, has two thousand three hundred and ninety six candies. Who has more candies and what is the difference in the number of candies?

1. Jimmy, 27

2. Jimmy, 243

3. Kimmy, 33

4. Kimmy, 105

Q.

The sum of a two-digit number and the number obtained by reversing the digits is always divisible by

1. 4

2. 9

3. 11

4. 3

Q.

Value of $2xy$ when $x=4$ and $y=0$ is _________.

1. 0

2. 8

3. 16

4. 6

Q.

The digits of a two digit number differ by 2. If the digits are interchanged and resulting number is added to the original number we get 88.

What is the original number?

1. 42

2. 57

3. 53

4. 24