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Instructions:
1. Read the given question.
2. Find the sum of its prime factors.
3. Click the correct number type.
Grades:
7-12
Example: What is twice the radius?
chord
diameter
circumference
Grades:
5
6
7-12
Example:
4.5
5.2
>
=
<
Grades:
4
5
Example:
What is the greatest common factor of 15 and 33?
Factors of 15 → 1, 3, 5, 15
Factors of 33 → 1, 3, 11, 33
Common Factors → 1, 3
Greatest Common Factors → 3
Grades:
5
6
7-12
Example:
8
5
3
6
9
9
8
6
5
3
Grades:
1
Example: 1.8 1.5 1.3 1.6 1.9
1.9 1.8 1.6 1.5 1.3
Grades:
4
5
Example:
What are the common factors of 15 and 33?
Factors of 15 → 1, 3, 5, 15
Factors of 33 → 1, 3, 11, 33
Common Factors → 1, 3
Grades:
5
6
7-12
Example:
If 2n = 8, then n = ?
8
3
2
Grades:
6
7-12
Example: In the number 39, which digit is in ones place?
6
3
9
Grades:
K
Example: What is the coefficient of 2y?
Answer: 2
Note: Numerical coefficient is the numeral part in a term.
Grades:
6
7-12
Example:
13 is a
number.
composite
prime
Grades:
4
5
Example:
8x100 + 2x10 + 7x1
782
278
827
Grades:
2