Algebraic expressions II - Normal

Question 1: Multiply

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

A

a

B

4 a

C

20 a

D

25 a

Question 2: Divide the fractions

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

A

3 a

B

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

C

\frac{a}{3}

D

\frac{3}{a}

Question 3: Expand the brackets

(a + 0.3) 5 b

A

5 a b + 15 b

B

a + 1.5 b

C

5 a b + 0.3

D

5 a b + 1.5 b

Question 4: Subtract

18 m 6 c m - 3 m 7 c m

A

14 m 99 c m

B

14 m

C

14 m 1 c m

D

15 m 1 c m

Question 5: Factorise

25 - a^{2}

A

(10 - a) (10 + a)

B

(20 - a) (5 - a)

C

(5 - a) (5 + 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 \sqrt{2}

B

16 \sqrt{2}

C

9

D

16

Question 9: Simplify the expression

0.4 (a - 2) + 0.8

A

0.8 a

B

0.8

C

0.4

D

0.4 a

Question 10: Simplify:

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

A

\frac{2 y - 1}{y}

B

5 y

C

\frac{y - 1}{y}

D

10 y

Test: Algebraic expressions II - Normal

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