Question
There are 3 blue marbles and 3 green marbles in each group.
There is a total of 15 green marbles.
  1. How many blue marbles are there?
  2. How many marbles are there altogether?
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

There are 3 blue marbles and 3 green marbles in each group.
There is a total of 15 green marbles.
  1. How many blue marbles are there?
  2. How many marbles are there altogether?