Negative Numbers Level 1
Use negative numbers in basic arithmetic and algebraic calculations.
This is level 1: simple subtraction You can earn a trophy if you get at least 9 correct and you do this activity online.
This is Negative Numbers level 1. You can also try:
Level 2 Level 3 Level 4 Level 5 Level 6 Level 7
Or here are some other negative number exercises to try:
Temperatures Negative Magic Reading Scales Inequalities
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Scan the QR code below to visit the online version of this activity.
Level 1 - Simple subtraction
Example: 5 - 12
Level 2 - Adding to a negative number
Example: -7 + 9
Level 3 - Addition and Subtraction
Example: -10 + -2
Level 4 - Multiplication
Example: -3 x 2
Level 5 - Division
Example: -10 ÷ 5
Level 6 - Substitution
Example: If a=-3 and b=-7 evaluate 7a - 8b - 6
Level 7 - Mixed
Example: A mixed set of word problems
As shown in the video, a number line is a really useful resource to help calculating sums and differences. Click on the image below for an interactive number line:
When multiplying or dividing negative numbers remember this:
Same Signs \( \rightarrow \) Positive Answer
Different Signs \( \rightarrow \) Negative Answer
Example 1: Same signs (a positive multiplied by a positive) gives a positive answer:
\( 12 \times 6 = 72 \)
Example 2: Different signs (a positive multiplied by a negative) gives a negative answer:
\( 12 \times (-6) = -72 \)
Example 3: Different signs (a negative divided by a positive) gives a negative answer:
\( (-12) \div 6 = -2 \)
Example 4: Same signs (a negative divided by a negative) gives a positive answer:
\( (-12) \div (-6) = 2 \)
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