Level 2
The mass of a box with 8 marbles is 12.35 kg.
Each marble weighs 1.2 kg.
  1. What is the mass of the empty box?
  2. What is the mass of 3 empty boxes?
3 m
Level 2
The mass of a box with 4 marbles is 3.77 kg.
The mass of the empty box is 2.57 kg.
  1. What is the mass of each marble?
  2. What is the mass of a box with 7 marbles?
3 m
Level 1
Adam saves $8.70.
He saves 3 times as much as Bryan.
How much more does Adam save than Bryan?
2 m
Level 2
Adam pays $2.40 for a sticker and a marble.
The sticker costs 3 times as much as the marble.
  1. What is the cost of 1 sticker?
  2. How much is the cost of 4 marbles and 2 stickers?
4 m
Level 1
Adam saves $2.50.
Bryan saves 3 times as much money as Adam.
Chris saves $1.90 less than Bryan.
How much money does Chris save?
3 m