Which one of the following fractions is the largest? Give the answer in letter. (Eg a)
(a) 13
(b) 25
(c) 49
1 m
The figure, not drawn to scale, on the right shows 2 rectangles overlapping each other. The ratio of the shaded area to the area of Rectangle A is 3 : 8. The ratio of the shaded area to the area of Rectangle B is 2 : 5. Find the ratio of the unshaded area to the total area of the figure.
2 m
The figure, not drawn to scale, on the right shows 2 rectangles overlapping each other. The ratio of the shaded area to the area of Rectangle X is 4 : 9. The ratio of the shaded area to the area of Rectangle Y is 3 : 6. Find the ratio of the unshaded area to the total area of the figure.
2 m
Fill in the blanks.
The ratio of adults to children is 1 : 2.
The ratio of boys to girls is 3 : 5.
Use LCM and find the following.

  1. Number of adults = _____ u
  2. Number of boys = _____ u
  3. Difference in the number of boys and girls = _____ u
  4. Total number of people = _____ u
4 m
TRY FOR FREE
Find the following values without a calculator.
  1. LCM of 2 and 8
  2. LCM of 3 and 18
  3. LCM of 12 and 20
  4. LCM of 2, 4 and 8
2 m
LCM
Andrew wants to make a square with rectangular tiles each measuring 8 cm by 6 cm. How many such rectangular tiles must he use to make the smallest possible square?
2 m
Sarah has enough flour to bake either 12s muffins or 9r croissants. If she has finished baking 40 muffins and 3r croissants, how many more muffins can she still bake in terms of s?
2 m
The figure, not drawn to scale, shows a rectangle, WXYZ, which is divided in 4 parts, A, B, C, D. The ratio of the area of D to the area of C is 1: 3. The ratio of the area of C to the area of B is 2:7. If the area of A is 238 cm2 , what is the area of the rectangle WXYZ?
3 m
The figure is made up of two squares and a triangle. The ratio of the area of Triangle X to that of Square Z is 11 : 1. The ratio of the shaded area to that of the unshaded area is 1 : 3. If the difference between areas of Triangle X and Square Y is 464 cm2, what is the area of Square Z?
3 m
Roger had two planks of the same length. He sawed one plank into equal parts of length 90 cm. In each part he drilled 6 small holes as shown in Figure 1. After that, he sawed the other plank into equal parts of length 1.5 m and in each part, he drilled 8 big holes as shown in Figure 2. When he finished drilling, he counted that there were 12 more small holes than big holes. If all the holes are spaced equally, how many holes were there altogether?
4 m