Revision

What is the arithmetic expression of “Divide the difference between 188 and 28 by 4”.

• 188−28÷4

• 188÷28−4

• (188-28)÷4

• 188÷(28−4)

Write the number “Forty million five thousand and twenty."

• 400520

• 450020

• 4000520

• 40005020

Which of the following is a prime number?

• 87

• 53

• 49

• 35

Which of the following fractions are arranged in ascending order?

• $\frac{5}{6},\ \frac{7}{8},\frac{8}{9}$

• $\frac{1}{3},\frac{1}{4},\frac{1}{5}$

• $\frac{5}{7},\frac{5}{9},\frac{5}{8}$

• $\frac{11}{12},\frac{3}{4},\frac{15}{16}$

Which of the following number is different from the others after rounding off to the nearest ten thousands?

• 1 738 490

• 1 742 894

• 1 749 915

• 1 735 207

The height of a tank with a square base is 9m. If the perimeter of the base is 36m, what is the volume of the tank?

• 81m³

• 144m³

• 324m³

• 729m³

What is the fraction of 38 cm to 1.9 m?

• $\frac{1}{20}$

• $\frac{1}{5}$

• $\frac{1}{2}$

• $1\frac{1}{5}$

A wheel of radius 14 cm rolls along a straight line from X to Y, making 8 revolutions. Find the distance of XY. (Answer in terms of

 $\pi$ ) 

• 224 $\pi$  cm

• 112 $\pi$  cm

• 56 $\pi$  cm

• 28 $\pi$  cm

The height of triangle is 9 cm. The base is 3 times as the height. Find the area of the triangle.

• 27cm²

• 121.5cm²

• 243cm²

• 243cm³

Divide a piece of 36.8 m long string into sections of 0.24 m each. How many sections can be made? What is the length of string left?

• 153 sections …0.08 m

• 153 sections …0.8 m

• 153 sections ...8 m

• 0.08 m