51 P4.ST.JC.18120949
Level 3
Adam was 3 times as old as Bryan 10 years ago.
Their total present age is 60 years now.
  1. How old is Adam now?
  2. How many years is Adam older than Bryan?
  3. How old is Bryan in 20 years' time?
4 m
More than or less than Times as many Unchanged difference Units table
52 P5.ST.JC.18121082
Level 3
12 of the number is 30 less than twice of the number.
Find the number.
2 m
Fraction of a whole Fraction to units More than or less than Times as many Common numerator Units equations Fraction units
53 P3.ST.JC.18120871
Level 3
Adam has 90 stickers.
Adam has 3 times as many stickers as Bryan.
Chris has 20 stickers less than Bryan.
How many stickers does Bryan have less than Adam?
4 m
Model Comparison Model Times-as-many Units method
54 P4.ST.JC.18120950
Level 3
Adam is 3 times as old as Bryan now.
In 10 years time, their total age is 60 years.
How old is Adam now?
  1. How old is Bryan now?
  2. How many years is Bryan younger than Adam?
  3. How old was Adam 20 years ago?
4 m
More than or less than Times as many Unchanged difference Units table
55 P5.ST.JC.18121083
Level 3
Twice a number is 45 more than 34 of the number.
Find the number.
2 m
Fraction of a whole F Division Fraction to units More than or less than Times as many Common numerator Units equations Fraction units

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