Arithmetic IV - Challenging

Question 1: Calculate:

\frac{3}{7} : \frac{1}{4}

A

1 \frac{5}{7}

B

2 \frac{4}{7}

C

\frac{5}{7}

D

\frac{3}{28}

Question 2: Calculate:

7 - 4 \frac{1}{8}

A

2 \frac{1}{8}

B

2 \frac{7}{8}

C

1 \frac{1}{8}

D

3 \frac{1}{8}

Question 3: Find the greatest common divisor of

(18, 45)

A

6

B

3

C

9

D

5

Question 4: Find the least common multiple of

(18, 45)

A

9

B

18

C

90

D

45

Question 5: Calculate:

{(\frac{2}{3})}^{3} (7 \frac{1}{2} - \frac{1}{6})

A

2 \frac{14}{81}

B

\frac{1}{6}

C

2 \frac{1}{6}

D

\frac{14}{81}

Question 6: Find

\frac{4}{7}

of

28

A

20

B

10

C

8

D

16

Question 7: Calculate:

| - 3.2 + {0.4}^{2} |

A

- 30.4

B

30.4

C

3.04

D

- 3.04

Question 8: Calculate:

0.3 \times 100 - 16850 : 1000

A

1.315

B

- 13.15

C

- 1.315

D

13.15

Question 9: Simplify:

- 9 \sqrt{2} + \sqrt{8} + \sqrt{50}

A

- 2 \sqrt{2}

B

2 \sqrt{2}

C

9 \sqrt{60}

D

- 9 \sqrt{60}

Question 10: How much the area of a rectangle with the sides

12.5

and

7.2

centimeters is smaller than the area of a square with the sides

11.1

centimeters?

A

3.321 c m^{2}

B

33.21 m^{2}

C

3.321 m^{2}

D

33.21 c m^{2}

Test: Arithmetic IV - Challenging

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