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Square numbers
A square number is the product of some integer with itself. To find the
square numbers, odd number of factors or arrange the factors in order
and multiply the number in the middle twice.
Find the square numbers.
⑴ Write the factors of each number. Count the factors and mark if the
number is a square number.
Number Factors How many Square
number
9 1, 3, 9 3
12
16
18
20
25
30
36
⑵ Look at the table above to find the square numbers. Write the
multiplication sentences.
9 = 3 × 3 =×
= × =×
42 Workbook S-4
A square number is the product of some integer with itself. To find the
square numbers, odd number of factors or arrange the factors in order
and multiply the number in the middle twice.
Find the square numbers.
⑴ Write the factors of each number. Count the factors and mark if the
number is a square number.
Number Factors How many Square
number
9 1, 3, 9 3
12
16
18
20
25
30
36
⑵ Look at the table above to find the square numbers. Write the
multiplication sentences.
9 = 3 × 3 =×
= × =×
42 Workbook S-4
