Page 151 - NUMINO Challenge_M2
P. 151
Type StudyAnswer
Key
Problem Solving
1. Solving for a Number
EEExxxeeerrrccciiissseee Michelle has 5 flowers remaining. Since she gave 5 to her sister and 3 to
her mother, the number of flowers she has left, , can be found by
completing -5-3=5.
=13 flowers
EEExxxeeerrrccciiissseee There are 6 sides on a dice. The number of dice that can be made with 48
sides: 6^ =48
=8 dice
Picture A is made with 16 spaces, and picture B is made with 24 spaces.
Picture B has 8 more colored spaces than picture A.
The difference in the lengths of the purple and green crayons is
5-3=2 cm. When coloring with the green crayon, 8 more spaces were
colored. Since the difference in length is 2 cm, 2 cm of the crayon is used
to color 8 spaces.
It takes 1 cm of crayon to color 4 spaces. Since the purple crayon was
used to color 16 spaces, 4 cm was used. So, -4=5, and =9 cm.
Problem solving
1 Phil and Lia have a total of 40 cents. After buying 10 pieces of candy, they had
10 cents left.
If the price of 10 candies is , then 40- =10 cents. is 30 cents and the
price of 10 candies is 30 cents.
If the price of 1 candy is , then ^10=30 cents, and =3 cents.
The price of 1 candy is 3 cents.
14 NUMINO Challenge M2
Key
Problem Solving
1. Solving for a Number
EEExxxeeerrrccciiissseee Michelle has 5 flowers remaining. Since she gave 5 to her sister and 3 to
her mother, the number of flowers she has left, , can be found by
completing -5-3=5.
=13 flowers
EEExxxeeerrrccciiissseee There are 6 sides on a dice. The number of dice that can be made with 48
sides: 6^ =48
=8 dice
Picture A is made with 16 spaces, and picture B is made with 24 spaces.
Picture B has 8 more colored spaces than picture A.
The difference in the lengths of the purple and green crayons is
5-3=2 cm. When coloring with the green crayon, 8 more spaces were
colored. Since the difference in length is 2 cm, 2 cm of the crayon is used
to color 8 spaces.
It takes 1 cm of crayon to color 4 spaces. Since the purple crayon was
used to color 16 spaces, 4 cm was used. So, -4=5, and =9 cm.
Problem solving
1 Phil and Lia have a total of 40 cents. After buying 10 pieces of candy, they had
10 cents left.
If the price of 10 candies is , then 40- =10 cents. is 30 cents and the
price of 10 candies is 30 cents.
If the price of 1 candy is , then ^10=30 cents, and =3 cents.
The price of 1 candy is 3 cents.
14 NUMINO Challenge M2
