Page 56 - NUMINO Challenge_M2
P. 56
EExxeerrcciissee There is a tree that grows twice as tall every year. If the tree was
4 m in 2009, then what is its height in meters in 2007?
EExxpplloorree Marbles are taken out of and put into boxes A and B. Count the
marbles that ended up in both boxes and work backwards to find
the original number of marbles in the two boxes.
AB Box A: 2+2=4
Box B: 7-2=5
Box A has 2 less marbles, and box B
has 2 more marbles.
AB
Box A: 5-3=2
Box B: 4+3=7
A B Box A has 3 more marbles, and box B
has 3 less marbles.
AB
Box A: 5
Box B: 4
EExxeerrcciissee One chick moved from A to B, while 3 chicks moved from B to A.
If there are 5 chicks each in A and B after they have moved, how
many chicks were in each space in the beginning?
AB
53Problem Solving
4 m in 2009, then what is its height in meters in 2007?
EExxpplloorree Marbles are taken out of and put into boxes A and B. Count the
marbles that ended up in both boxes and work backwards to find
the original number of marbles in the two boxes.
AB Box A: 2+2=4
Box B: 7-2=5
Box A has 2 less marbles, and box B
has 2 more marbles.
AB
Box A: 5-3=2
Box B: 4+3=7
A B Box A has 3 more marbles, and box B
has 3 less marbles.
AB
Box A: 5
Box B: 4
EExxeerrcciissee One chick moved from A to B, while 3 chicks moved from B to A.
If there are 5 chicks each in A and B after they have moved, how
many chicks were in each space in the beginning?
AB
53Problem Solving
