Question:

PSLE

Round off the numbers to nearest ten and find the closest estimate of 27.8 x 15.6?

1 m
Round off the numbers to nearest ten and find the closest estimate of 27.8 x 15.6?

Find the area of this semicircle. Round off the answer to nearest 2 decimal place. (Take π = 3.14)

1 m

TRY FOR FREE

Find the following values without a calculator.

Round off 9.8765 to

1 m
Round off 9.8765 to

- the nearest whole number.
- 1 decimal place.
- 2 decimal place.
- 3 decimal place.

Wendy's father's weight to her weight is 8 : 3. If Wendy puts on 60% more weight, by what percentage must her father's weight be reduced by so that their total weight remains unchanged as before. Correct the answer(s) to 1 decimal place.

2 m
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

Lisa's and Natalie's savings were in the ratio of 4 : 9. Both of them shared the cost of their grandfather's gift equally. Lisa's remaining savings was ^{1}_{4} as much as Natalie's savings. What percentage of her savings did Lisa spend? Correct the answer(s) to 1 decimal place.

3 m
One avocado cost 4 times as much as one honeydew. Mrs Zhang bought 2 avocados and 4 honeydews for $15. How much would 20 avocados and 16 honeydews cost? Express the answers to 2 decimal places.

3 m
9 identical 4-cm cubes are placed in an empty rectangular tank of length 90 cm and width 25 cm. The tank is then filled with water from a tap flowing at a rate of 7 litres per minute. It takes 12 minutes to fill up ^{3}_{4} of the tank. What is the height of the tank? Correct the answer to 1 decimal place.

3 m
Figure 1 shows a closed rectangular tank of dimensions 40 cm by 40 cm by 80 cm with a cube of edge 20 cm glued to Its bottom left corner. Tank contains 70 litres of water. Figure 2 shows the same rectangular tank lying on its side. Find the height of the water level, in centimetres, corrected to 2 decimal places.

3 m

A rectangular tank measuring 60 cm by 50 cm by 25 cm was to be filled with water by two taps, A and B. Tap A which fills the tank at a rate of 8ℓ per minute was first turned on for 5 minutes before Tap B was turned on as well. If the tank was filled to the brim in a total of 7 minutes from the time when Tap A was first turned on, what is the rate at which Tap B fills the tank? Give the answer in ℓ per minute correct to 1 decimal place.

3 m