fill in the blanks.

Question 11 Mark

If $213\times 52$ is divisible by $9$, then digit $x$ is $………$.

Answer

If $213\times 52$ is divisible by $9$, then digit $x$ is $5$.
Sum of digits $= 2 + 1 + 3 + 5 + 2 + x$ is divisibility $9$
$= 13 + x$ is divisible by $9$
$\therefore x = 5$ or $13 + 5 = 18 – 9 = 2$

View full question & answer→

Question 21 Mark

If the division $N \div 5$ leaves remainder $4$ and the division $N \div 2$ leaves remainder $1$, then unit’s digit of $N$ must be ……….

Answer

If the division $N \div 5$ leaves remainder $4$ and the division $N \div 2$ leaves remainder $1$, then unit’s digit of $N$ must be $9$.

View full question & answer→

Question 31 Mark

Usual form of number $100 \times 7 + 10 \times 4 + 1$ is $……….$

Answer

Usual form of number $100 \times 7 + 10 \times 4 + 1$ is $100 \times 7 + 10 \times 4 + 1$ is $741.$

View full question & answer→

Question 41 Mark

The general form of a $2$ digit number $57$ is $……….$

Answer

General form of a $2$ digit number $57$ is $10 \times 5 + 7 \times 1.$

View full question & answer→

Question 51 Mark

The next number of the series $0, 1, 1, 2, 3, 5, 8, 13, ……….$ is $……….$

Answer

The next number of the series $0, 1, 1, 2, 3, 5, 8, 13$, is $21$ and $34. {\because 8 + 13 = 21 21 + 13 = 34}$

View full question & answer→

Question 61 Mark

The difference of a $3=$ digit number $a b c (a > c)$ and the number obtained by reversing the digits is always divisible by $……….$ and $……….$

Answer

The difference of a $3=$digit number $a b c (a > c)$ and number obtained by reversing the digits is always divisible by $99$ and $(a – c)$.

View full question & answer→

Question 71 Mark

The difference of a $2-$digit number and number obtained by reversing the digits is always divisible by $……….$ and $……….$

Answer

The difference of a $2-$digit number and number obtained by reversing the digits is always divisible by $9$ and difference of the digits.

View full question & answer→

Question 81 Mark

The sum of a $2-$digit number and number obtained by reversing the digits is always divisible by $11$ and $…………$

Answer

The sum of a $2-$digit number and number obtained by reversing the digits is always divisible by $11$ and sum of digits.

View full question & answer→

MATHS fill in the blanks.

Test yourself on this topic