Place Value

Q.

Smallest $3$ digit number is $100$

1. True
2. False

Q.

Expand number 34879.

1. 3*1000+4*100+7*10+9*1

2. 3*10000 + 4*1000 + 8*100 +7*10 +9*1

3. 3*10000 + 4*1000 + 8*100 +7*10 +9*0

4. 3*10000 + 4*100 + 8*100 +7*10 +9*1

Q.

Write the given expanded forms in the standard form. $80,00,000+70,000+3,000+400+1$

Q.

Write the place value of $2$ in the following decimal numbers: (i) $2.56$ (ii) $21.37$ (iii) $10.25$ (iv) $9.42$ (v) $63.352$

Q.

The smallest $4$-digit number ending in $4$ is _______.

Q.

Express $72000$ in words.

Q. Simplify:
(i) $3^{1/4}\times 5^{1/4}$
(ii) $2^{5/8}\times 3^{5/8}$
(iii) $6^{1/2}\times 7^{1/2}$

Q.

Question 2(b)

Place commas correctly and write the numerals:
Nine crore five lakh forty-one.

Q.

If in number 9846768

__

Q. What is the class mark of class 21−30 in table of Q. 3?
(a) 4.5
(b) 9
(c) 25.5
(d) 26

Q. Multiply:
(i) $3\sqrt{5}\mathrm{by}2\sqrt{5}$
(ii) $6\sqrt{15}\mathrm{by}4\sqrt{3}$
(iii) $2\sqrt{6}\mathrm{by}3\sqrt{3}$
(iv) $3\sqrt{8}\mathrm{by}3\sqrt{2}$
(v) $\sqrt{10}\mathrm{by}\sqrt{40}$
(vi) $3\sqrt{28}\mathrm{by}2\sqrt{7}$