Partial Pyramids

Menu Level 1 Level 2 Level 3 Pyramid Puzzle Help More

Complete the pyramids so that the numbers in each brick is the sum of the two numbers in the bricks below.

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12

16

21

5

7

9

12

2

3

4

5

7

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7

Correct Wrong

8

3

4

8

6

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1

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5

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109

56

Correct Wrong

28

Correct Wrong

Correct Wrong

13

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3

Correct Wrong

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158

Correct Wrong

81

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42

Correct Wrong

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23

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13

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76

Correct Wrong

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19

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17

8

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3

Have a guess what might go in the yellow brick then work out whether is is too big or too small to make the bricks above.

Adjust your guess accordingly.

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43

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13

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8

9

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3

Confused
Check

This is Partial Pyramids level 1. You can also try:
Level 2 Level 3

Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file.

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Featured Activity

Nine Digits

Nine Digits

Arrange the given digits one to nine to make three numbers such that two of them add up to the third. This is a great puzzle for practicing standard pen and paper methods of three digit number addition and subtraction.

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Description of Levels

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Level 1 - Adding positive whole numbers

Level 2 - Adding directed numbers

Level 3 - Adding fractions

Pyramid Puzzle - The same sort of puzzle but with a different objective.

More activities including lesson Starters, visual aids, investigations and self-marking exercises.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

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Help

The number in each brick of the pyramid is found by adding together the numbers in the two bricks below. To find the numbers in some bricks you may have to use subtraction if a brick number above is given. You will need a good problem solving styrategy to solve the last two puzzles in each exercise.

Pyramid Help

Mathematical Notation

Use the forward slash / to type a fraction then the right arrow or tab key to end the fraction.

For example: Type 1/2 to get a half.

For mixed numbers, such as three and a half, type 3 space 1/2.

Fractions should be given in their lowest terms.

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.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

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