Page 153 - NUMINO Challenge_M2

Answer
Key

2. Drawing Tables

EEExxxeeerrrccciiissseee 2 numbers that 0 1 2 3 4 5 6 7 8

have a sum of 8 8 7 6 5 4 3 2 1 0

Product 0 7 12 15 16 15 12 7 0

The two numbers that have a sum of 8 and a product of 12 are 2 and 6.

Type Study If Jan takes 1 more acorn from the tree, then Dan should take 3 more
acorns and Stan should take 2 more acorns.

Dan: 3 acorns, Stan: 2 acorns

Number of acorns Dan takes 3 4 5 6 7 8 9

Number of acorns Stan takes 2 3 4 5 6 7 8

Number of acorns Jan takes 1 2 3 4 5 6 7

Total number of acorns 6 9 12 15 18 21 24

Dan: 8 acorns, Stan: 7 acorns, Jan: 6 acorns

Problem solving

1 The number of dolls Kevin has is 1 more than what Daniel has and 2 times

more than what Lisa has. Use a table to find the number of dolls each person

has when the total number of dolls is 24.

Number of dolls Lisa has 1 23 4 5

Number of dolls Kevin has 2 4 6 8 10

Number of dolls Daniel has 1 35 7 9

Sums 4 9 14 19 24

When the total number of dolls is 24, Daniel gets 9 dolls.

2 Draw a table showing the number of marbles in each purse when each purse

has at least 1 marble.

Red purse 1 2 3 4 5 6 7 8

Blue purse 8 7 6 5 4 3 2 1

The red purse has more marbles than the blue purse when there are 5, 6, 7, or

8 marbles in the red purse. There are a total of 4 ways.

16 NUMINO Challenge M2