641 P6.ST.JC.18121320
Level 2
1 u + 2 = 4 p
10 - 3 u = 4 p

Find the following values.
  1. 1 u
  2. 1 p
2 m
W 4 operations Units & parts Substitution Units equations
642 P4.PA.JM.17092410
Level 3
Jean spent 5 days making necklaces for her friends. Each day, she managed to make 2 more necklaces than the day before. She made a total of 35 necklaces. How many necklaces did she make on the 2nd last day?
3 m
Equal intervals Model Comparison Units method
643 P5.RD.JM.17083225
Level 3
During her shopping trip, Samantha bought three different types of pens, X, Y and Z in the ratio of 4 : 2 : 5. She decided to sell them at the prices listed as shown.

Pen X: $1.20
Pen Y: $0.85
Pen Z : $0.60

Given that Samantha bought a total 451 pens, how much did Samantha collect from the sale of all the pens?
3 m
D 4 operations Ratio to units Money Number x value Units table
644 P4.ST.JC.18121034
Level 3
Adam has some stickers.
He gives 29 of the stickers to Bryan,
13 of the stickers to Chris
and the rest to David.
David has 100 more stickers than Bryan.
How many stickers does Adam have at first?
4 m
Fraction of a set F Addition & subtraction Common denominator Fraction to units More than or less than Model Part-whole Units method
645 P5.ST.JC.18121091
Level 3
220 children are in a school.
14 of the boys and 15 of
the girls wear glasses.
50 children wear glasses.
  1. How many boys are there?
  2. How many girls are there?
  3. How many children do not wear glasses?
3 m
Fraction of a set Fraction to units Units table Units & parts Elimination

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