Page 22 - NUMINO Challenge_D2
P. 22
Problem solving Key Points
1 Find all the numbers from 1 to 30 that have four Use the two ways
factors. shown below to find
the numbers that
have four factors.
When m 3 and
n0
1 A A2 A3
1
When m 1 and
n1
1A
1
B
2 The sum of two different numbers that have The numbers that
two factors is 589. What are the two numbers? have two factors are
prime numbers. To
have the odd number
589, add an even
number and an odd
number.
19Number and Operations
1 Find all the numbers from 1 to 30 that have four Use the two ways
factors. shown below to find
the numbers that
have four factors.
When m 3 and
n0
1 A A2 A3
1
When m 1 and
n1
1A
1
B
2 The sum of two different numbers that have The numbers that
two factors is 589. What are the two numbers? have two factors are
prime numbers. To
have the odd number
589, add an even
number and an odd
number.
19Number and Operations
