1 P6.ST.JC.18121425
Level 3
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
Ratio to units Combined repeated identity Units table
2 P6.MS.JC.18031259
Level 1 PSLE
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
3 P6.AP.TL.17090712
Level 2
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
Square Rectangle Tiling Min-max LCM
4 P6.AG.JC.17080441
Level 3
Irene has enough flour to bake either 21a tarts or 18 biscuits. If she has finished baking 5a tarts and 6 biscuits, how many more tarts can she still bake in terms of a?
2 m
Algebra in 1 variable Algebra simplifying LCM More than or less than Proportion
5 P6.RA.TL.17042601
Level 3
The figure, not drawn to scale, 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.
3 m
Finding ratio LCM Overlapping area Unchanged difference Units method

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