31 P6.FR.TL.16010131
Level 3
Three girls, Isabelle, Zoe and Diana had a total of 1680 marbles. Some exchanges were made. First, Isabelle gave Zoe as many marbles as Zoe had. After that, Zoe gave 34 of whatever she had then to Diana. Finally, Diana gave 27 of whatever she had to Isabelle. As a result, they each had the same number of marbles. How many marbles did Isabelle have at first?
5 m
Fraction to units Equal stage after Unchanged total Working backwards Units table Units & parts & boxes Substitution
32 P6.WN.JC.16010104
Level 2
Violet had 6 times as many erasers as Jane at first. After Violet gave 40 erasers to Jane, they each had the same number of erasers in the end. How many erasers did Violet have at first?
3 m
W 4 operations Times as many Equal stage after Internal transfer Units table
33 P6.WN.JC.16010150
Level 3
A jar contained $2 and $5 notes with a total value of $518. 4 pieces of $5 were exchanged for $2 notes of similar value. In the end, the number of $2 notes was the same as the $5 notes. How many $5 notes were there at first?
3 m
W 4 operations Proportional exchange Equal stage after Number x value Units table
34 P6.WN.JC.16010158
Level 3
Sean and Cathy had some money each. If Cathy gives Sean $49, he will have 3 times as much as Cathy. If Sean gives Cathy $20, he will have the same amount as her. How much money does each person have respectively?
  1. Sean?
  2. Cathy?
3 m
W 4 operations Money Times as many Equal stage after Internal transfer Unchanged total Double if Units table

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