The temperature is -2 degree celsius. It rises by 3 degrees. What temperature is it now?
2
1
0
3
Use number line to solve: start on +3 then moves -6 then moves to +2
0
-1
-2
-4
Recognise the rule for the sequence : 4 ,8 , 12 , 16 , 20
+ 3
+2
increases by 4
decreases by 4
Recognise the rule for the sequence: 72, 64, 56, 48 , 40 , 32 ,24
+6
increases by 8
decreases by 8
-6
0
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