7th Grade Assessment 2

Add/Subtract

100

5+-3 =

2

200

2--5=

7

300

-8+-7=

-15

400

-5--12=

7

500

-7+8=

1

Multiply/Divide

100

-3x-9=

27

200

8÷-4

-2

300

-20x4=

-80

400

-30÷-5=

6

500

-16÷8=

-2

Multiples/Factors

100

What are all the factors of 42?

1,2,3,6,7,14,21,42

200

The 17th multiple of 12 is 204. What is the 19th multiple?

228

300

What is the highest common factor (HCF) between 200 and 240?

40

400

The 17th multiple of 12 is 204. What is the 15th multiple?

180

500

What is the lowest common multiple (LCM) of 18 and 96?

288

Powers/Roots

100

What is the square root of 81?

9

200

What is the square root of 169?

13

300

√64

8

400

³√64

4

500

What is 9⁷? (you must pronounce the number correctly)

4,782,969

Brainiac Questions

100

Find 2 prime numbers that add up to 40.

3 and 37. 11 and 29. 17 and 23.

200

In computing, 2¹⁰ is called 1K. Write down 2K as a number. (You must pronounce the number correctly.)

2,048

300

"3⁵ and 5³ are both equal to 15." - Shen

What mistake has Shen made? Correct the statement

Powers are not the same as multiplication. 3⁵ = 243 and 5³ = 125

400

Write 135 as a PRODUCT of its prime factors

27 x 5 = 135

500

The HCF of two numbers is 6. The LCM is 72. One of the numbers is 24. What is the other number?

18