Algebraic expressions II - Normal

Question 1: Multiply

\frac{2}{5} \times 10 a

A

20 a

B

4 a

C

25 a

D

a

Question 2: Divide the fractions

\frac{a}{2} : \frac{a^{2}}{6}

A

\frac{3}{a}

B

3 a

C

\frac{a^{3}}{12}

D

\frac{a}{3}

Question 3: Expand the brackets

(a + 0.3) 5 b

A

5 a b + 0.3

B

5 a b + 1.5 b

C

5 a b + 15 b

D

a + 1.5 b

Question 4: Subtract

18 m 6 c m - 3 m 7 c m

A

14 m 99 c m

B

15 m 1 c m

C

14 m 1 c m

D

14 m

Question 5: Factorise

25 - a^{2}

A

(5 - a) (5 + a)

B

(20 - a) (5 + a)

C

(10 - a) (10 + a)

D

(20 - a) (5 - a)

Question 6: Multiply

0.25 a^{3} b^{2} \times 4 a

A

10 a

B

100 a^{4} b^{2}

C

a^{4} b^{2}

D

10 a b

Question 7: Simplify the expression

\sqrt{16 a} - \sqrt{81 a} + 3 \sqrt{a}

A

- 2 \sqrt{a}

B

2

C

2 \sqrt{a}

D

- \sqrt{62 a}

Question 8: Calculate

7 a + \sqrt{2 a}

, when

a = 2

:

A

9

B

16 \sqrt{2}

C

16

D

9 \sqrt{2}

Question 9: Simplify the expression

0.4 (a - 2) + 0.8

A

0.4

B

0.4 a

C

0.8 a

D

0.8

Question 10: Simplify:

\frac{10 y - 5}{5 y}

A

\frac{y - 1}{y}

B

5 y

C

\frac{2 y - 1}{y}

D

10 y

Test: Algebraic expressions II - Normal

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