Unit 1 + Lesson 2.1

Integers

100

-4 - -5

1

200

-20 x 3

 -60

300

-300 ÷ -6

50

400

(-5 -7) ÷ -4

3

500

-4 + -10 =  ____  ÷ 2

-28

LCM/HCF

100

Find all the multiples of 5 between 10 and 27

15,20,25

200

Find the LCM of 4 and 10

20

300

Find the HCF of 20 and 35

HCF= 5

400

Simplify the fraction 32/48

2/3

500

Two numbers have a HCF of 5 and an LCM of 60. What are the 2 numbers?

5 and 60

Constructing Expressions

100

Write an expression:

I think of a number x. I multiply it by 2 then subtract 3.

2x - 3

200

3 times y multiplied by z

3yz

300

Multiply x by 4 and add  5

4x + 5

400

h less than t

t-h

500

Multiply x by 4 and subtract from 3.

3- 4x

Divisibility & more integers

100

321 is not divisible by 11. Why?

odd digits= 4 and even = 2 and 4-2=2 which is not divisible by 11

200

Create a 4 digit number that is divisible by 9

own answer

300

-7-10+3

-14

400

Create a 4 digit number that is divisible by 11

own answer

500

(-35 ÷ 5) ÷ -7

1

Square roots / Cube roots

100

8²

64

200

4³ - 2²

60

300

√... = 15

225

400

√196 - ³√216

8

500

³√... = 8

512