Negative Numbers Level 5
Use negative numbers in basic arithmetic and algebraic calculations.
This is level 5: division You can earn a trophy if you get at least 9 correct and you do this activity online.
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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:
\( (-12) \div (-6) = 2 \)
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can double-click the 'Check' button to make it float at the bottom of your screen.