Stuff with Words
Subtracting a negative is the same thing as...
adding its opposite.
Use tiles to solve:
-5 + 9
4
Use tiles to solve:
-4 - (+6)
-10
Use tiles to solve:
-2 - (+3)
-5
The set of whole numbers and their opposites.
An integer.
Use the sign rule to solve:
-12 + 5
12 - 5 = -7
-7
Use a number line to solve:
+4 - (+11)
-7
Use the sign rule to solve.
-10 + 30
20
A set of two numbers that when added together equal zero.
Zero Pair
Use the sign rule to solve:
-16 + (-17)
-33
Use sign rule to solve:
15 - (-7)
22
Use the sign rule to solve:
21 - (+5)
16
The two colours of positive tiles and then the two colours of negative tiles.
Red/Black
Blue/White
Use a number line to solve.
+2 + (-3) + (+5)
+4
Use sign rule to solve:
-27 - (-3)
-24
Use tiles to solve.
-5 - (+2) + 3
-4
How do you find the sum of numbers with different signs?
Subtract and take the sign of the bigger number.
Use the sign rules to solve.
-16 + 18 + (-17)
-15
Use the sign rules to solve.
-10 - 11 - (-3)
-18
Use tiles to solve.
-10 + (-2) - 5
-17