# Subtracting negative Numbers

## Lesson details

### Key learning points

1. In this lesson, we will explore subtracting negative numbers as the addition of the additive inverse.

### Licence

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## Video

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## Worksheet

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## Starter quiz

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### 7 Questions

Q1.
Fill in the gap: Two numbers are additive inverses if their sum is _____.
equal
negative
opposite
subtraction
Q2.
Which words (in order) best complete this sentence: __________________________ can be viewed as the addition of the ____________________________.
Sum, subtraction
Q3.
Which numbers best complete this number sentence in order: 9 - ___ = 9 + ___ = 4
(-13), 13
(-5), 5
13, (-13)
Q4.
Select the calculation that could be represented by this diagram.
-12 - 10 = -2
-2 - 12 = 10
Correct answer: 10- 12 = -2
Q5.
Calculate 2-5
-7
3
7
Q6.
Calculate (-2)-5
-3
3
7
Q7.
Calculate (-2) + (-5)
-3
3
7

## Exit quiz

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### 5 Questions

Q1.
Which word best completes the gap: -14 and 14 are additive inverses as they sum to ____
negative
subtraction
the same thing
twenty eight
Q2.
Which words (in order) best complete this sentence: __________________________ can be viewed as the ________________________ of the additive inverse.
Subtraction, subtraction
Q3.
Complete the gap: -3 - (-5) = (-3) + _____
-1
-5
-8
2
Q4.
Which calculation gives the smallest answer?
-9-(-12)
9 - (-12)
9- 12
Q5.
Which calculation gives the largest answer?
-9-(-12)
(-9)-12