Algebra • Collecting Like Terms

Algebra Pyramids

Each block is the sum of the two blocks below it. Collect like terms to fill in the missing blocks.

Algebra Pyramids
Settings
Steps
Level
Terms
Options
Questions
Summary
Choose a level
Each level changes the shape of the pyramid and how you work it out.
1
Build up
Three rows with the bottom row given. Add pairs of blocks to fill each block above.
2
Taller
Four rows with the bottom row given. More adding, with bigger expressions near the top.
3
Both ways
Four rows with gaps anywhere. Some blocks can only be found by subtracting.
4
Negatives
Four rows with gaps anywhere and negative terms throughout.
Step 1 of 5
Choose the terms
Pick the letters and the kind of terms in the pyramid.
Letters to use:
x, y
a, b
p, q
m, n
Type of terms:
Two letters
Letters and numbers
Powers
Mixed
Highest power:
Squared
Cubed
No terms selected
Step 2 of 5
Options
Choose the size of the numbers in the bottom row.
5
Up to 5
Numbers from 1 to 5 in the bottom row
9
Up to 9
Numbers from 1 to 9 in the bottom row
Subtraction in the bottom row:
No subtraction
Every term in the bottom row is positive
Include subtraction
Some terms in the bottom row are negative
Level 4 always includes negative terms.
No options selected
Step 3 of 5
Number of questions
How many pyramids would you like to complete?
3
5
7
10
Step 4 of 5
Ready to play?
Check your settings before starting.
Level —
Letters —
Terms —
Numbers —
Subtraction —
Questions —
Step 5 of 5
Score
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Questions
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Accuracy
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Ready to build some pyramids?

Complete the pyramids!

Each block is the sum of the two blocks directly below it.
🏆
Game complete!
Great work!
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Answered
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Question review
How to play
1
Choose your level and terms
Pick a level, the letters, and the kind of terms: two letters, letters and numbers, powers, or a mix.
2
Fill in the missing blocks
Each block is the sum of the two blocks below it. Tap a gold block and type the expression using the keypad. For a power, type the letter, press the index button, then type the power.
3
Submit and review
When every block is filled, press Submit. Any wrong blocks show the correct answer. Look at your corrections, then press Next pyramid. Stuck? Press Hint.
2b + (a + b) = a + 3b
Collect like terms: the b terms make 3b, and the a stays as it is
Hint