21 P6.RD.TL.16010110
Level 3
The ratio of Henry's total points to that of Vincent's in a mock test was 6 : 7. In the next mock test, Henry's points increased by 70%. By what percentage must Vincent's points be increased if their total points were to be the same? Round off the answer to the nearest whole number.
3 m
W Round off Ratio to units Finding percent Percent change by Percent to units Equal stage after All change Units table Units manipulation
22 P6.SP.JC.17080922
Level 3
The figure shows a tank made up of 3 sections. Cuboid A with a square base of side 4 cm and height 30 cm. Cube B with a side of 12 cm. Cuboid C that is 60 cm by 20 cm by 40 cm. Water from a tap above flows down at a rate of 1.2 litres per minute while water is drained out from the bottom at a rate of 1 litre per minute. How long did it take to fill up the tank to a height of 66 cm from the base? Give the answer in minutes correct to nearest whole number.
3 m
Rate 1 object Unit conversion Volume Volume of cuboid Volume of cube Filling tank W Round off
23 P6.AP.TL.17090740
Level 2
The figure is formed by 2 semicircles, 2 identical quarter circles and a square ABCD. The perimeter of square ABCD is 60 cm. What is the total area of the shaded parts? Express the answer in the nearest whole number. (Take π = 3.14)
2 m
Square Semicircle Quarter circle Composite figure area Cut & paste W Round off
24 P4.WN.JM.17102207
Level 1
Round off 88 to the nearest ten. Then estimate 88 x 9.
2 m
W Place values W Multiplication & division W Round off Estimation
25 P4.WN.JM.17102208
Level 1
Round off 415 to the nearest hundred. Then estimate 415 x 7.
2 m
W Place values W Multiplication & division W Round off Estimation
26 P4.WN.JM.17102209
Level 1
Give an estimate for 78 x 574 by first rounding the values to the nearest ten.
2 m
W Place values W Multiplication & division W Round off Estimation
27 P4.WN.JM.17102211
Level 1
Estimate the product of 35972 and 63 by first rounding off the bigger number to the nearest thousand and the smaller number to the nearest ten.
2 m
W Place values W Multiplication & division W Round off Estimation
28 P6.VO.NK.17080919
Level 3
A tank, 110 cm by 100 cm by 70 cm, was completely filled with water. It was used to fill 16 bottles, each 3 litres in capacity. What was the height of the water left in the tank after all the bottles were filled. Round off to whole number.
3 m
Volume of cuboid Height of cuboid Volume transfer W Round off Unit conversion
29 P5.DA.JM.17083119
Level 3
The bar graph shows the number of storybooks read by the students in a school.
  1. How many students are there in the school?
  2. What percentage of the students in the school read at least 1 storybook? (Give the answer correct to the nearest whole number.)
3 m
Bar graph Finding percent W Round off
30 P5.DA.JM.17083121
Level 2
The table shows a plant's height on the first day of each month from January to May.
  1. What was the height of the plant on 1st February? Give the answer to the nearest cm.
  2. What was the increase in the plant's height from 1st April to 1st May?
3 m
Table Length Time W Round off

5 per page

10 per page

20 per page

Symbols

x2
x3
₵
$
⊥
//
∠
°
π
%
:
\[ \]
STUDENT
Navigations
Contact Us
Members
Links