Chapter 1 and 2 Revision

Which is the correct next line?

 $-4-\left(-8\right)$  

•  $-4-8$  

•  $-4+8$  

•  $12$  

•  $4-8$  

 $4^2=$  

(a)  

Tick all the prime numbers.

• 5

• 9

• 13

• 1

• 21

Which of the following shows the prime factorization of 24?

• 2 × 2 × 2 × 3 × 3

• 2 × 2 × 2 × 3

• 2 × 2 × 2 × 2 × 3

• 2 × 2 × 3 × 3

Is 93 a prime number?

• YES

• NO

Tags

CCSS.4.OA.B.4

Find the HCF of 30 and 36

• 2
• 3
• 4
• 6

Tags

CCSS.6.NS.B.4

What are the factors of 25?

• 1, 2, 3, 5, 10, 15, 25
• 1, 5,  25
• 1, 25
• 1, 5

Tags

CCSS.4.OA.B.4

Two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again?

• 48 seconds
• 45 seconds
• 16 seconds
• 8 seconds

Tags

CCSS.6.NS.B.4

 $\left(-9\right)^2$  

(a)  

What fraction is represented at point A?

• 4/5
• 3/1
• 3/4
• 1/3

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B