Problem / game
School
YCIS Beijing
Country
Age
10
Answer #1- multipy by 4 or 8
Answer #2- multiply by ll
Method
Step 1- List out the factors for any two of the numbers in the small boxes. I chose 56 and 24.
56- 1,2,4,7,8,14,28,56
24- 1,2,3,4,6,8,12,24
Step 2- Find the common factors. In this case there are two common factors, 8 and 4.
Step 3- Divide each number by the common factors to get the possible starting numbers. (And to check)