1. Integers challenge
Year 8 ECHO

2. Integers Speed Challenge
1.
−52+(−5)

3. Integers Speed Challenge
32 − 50

4. Integers Speed Challenge
(2 − 6) × 2

5. Integers Speed Challenge
30 − (−48)

6. Integers Speed Challenge
 3
( 4 × −4) +  ÷
 −6 

7. Integers Speed Challenge
Four friends start up a tutoring business. They spend $200 on advertising
and stationery before getting any customers. In the first week they earn
$120. In the second week they earn $160. How much money do the
four friends have after the second week?

8. Integers Speed Challenge
Find the lowest common multiple of:
6 and 12

9. Integers Speed Challenge
Find the lowest common multiple of:
4 and 3

10. Integers Speed Challenge
Find the highest common factor of:
16 and 24

11. Integers Speed Challenge
Find the highest common factor of:
24 and 64