Question:

Level 1 PSLE

The area of a square is 81 cm^{2}. What is the perimeter of the square?

1 m
The area of a square is 81 cm

Level 1

Find the following values without a calculator.

2 m
Find the following values without a calculator.

- A x A = 64

Find A. - 6 x 6 x 6 = _______
- 8 x 25 = _______
- 9 x 400 = _______

Level 2

The figure shows a piece of paper. When the shaded rectangles A, C, D and square B is cut out, the remaining parts form the net of a cuboid. Area E is a square. Given that the area of A is 18 cm^{2} and the area of B is 81 cm^{2}, find the volume of the cuboid.

The figure shows a piece of paper. When the shaded rectangles A, C, D and square B is cut out, the remaining parts form the net of a cuboid. Area E is a square. Given that the area of A is 18 cm

2 m

Level 2

The figure shows cardboard pieces used to form the net of a cuboid. The area of each square piece is 25 cm^{2} and the area of each rectangular piece is 40 cm^{2}. Find the volume of the cuboid.

The figure shows cardboard pieces used to form the net of a cuboid. The area of each square piece is 25 cm

2 m

Level 2

A cuboid has a square face of area 49 cm^{2}. The ratio of its length to its breadth is 9 : 7. Find its volume.

A cuboid has a square face of area 49 cm

2 m

Level 2 PSLE

The block of wood shown was dipped into a pail of paint. The block was then cut into 4 identical cubes along the dotted lines and taken apart. The total unpainted area of the 4 cubes was 216 cm^{2}. What was the volume of each cube?

The block of wood shown was dipped into a pail of paint. The block was then cut into 4 identical cubes along the dotted lines and taken apart. The total unpainted area of the 4 cubes was 216 cm

2 m

Level 3 PSLE

The figure shows a square divided into two smaller squares A and C and two rectangles B and D. The total perimeter of rectangles B and D is 52 cm. The area of square A is 25 cm^{2}. What is the area of square C?

The figure shows a square divided into two smaller squares A and C and two rectangles B and D. The total perimeter of rectangles B and D is 52 cm. The area of square A is 25 cm

2 m

Level 2

The circles are not drawn to scale. The small circle is with radius a and the big circle is with radius A. The ratio of a to A is 4 : 7. If the area of the small circle is 169π cm^{2}, find A. Express the answer in mixed number.

The circles are not drawn to scale. The small circle is with radius a and the big circle is with radius A. The ratio of a to A is 4 : 7. If the area of the small circle is 169π cm

2 m

Level 2

A rectangle is placed in a circle with O as the centre. Use the calculator value of π to find the shaded part of the circle. Correct the answer to 1 decimal place.

A rectangle is placed in a circle with O as the centre. Use the calculator value of π to find the shaded part of the circle. Correct the answer to 1 decimal place.

2 m

Level 2 PSLE

Anna has a square piece of paper FGHJ of side 21 cm. She cut along the dotted lines shown in Figure 1 to get one small square of area 9 cm^{2} and 8 identical right-angled triangles. Triangle KLM in Figure 2 is one such triangle. Find the length of KM.

Anna has a square piece of paper FGHJ of side 21 cm. She cut along the dotted lines shown in Figure 1 to get one small square of area 9 cm

2 m