Complete the pyramids so that the numbers in each brick is the sum of the two numbers in the bricks below. Use the forward slash / to type a fraction. Give answers as proper fractions in their lowest terms.

 + + $$1\frac{1}{4}$$ $$1\frac{1}{4}$$ $$1\frac{3}{4}$$ $$\frac{3}{4}$$ $$\frac{1}{2}$$ $$\frac{3}{4}$$ $$1$$ $$\frac{1}{2}$$ $$\frac{1}{4}$$ $$\frac{1}{4}$$ $$\frac{1}{2}$$ $$\frac{1}{2}$$ + + $$1\frac{1}{2}$$ $$\frac{3}{4}$$ $$\frac{3}{4}$$ $$\frac{3}{4}$$ $$\frac{3}{4}$$ $$\frac{1}{4}$$ $$\frac{1}{4}$$ $$\frac{1}{4}$$ + + $$11$$ $$5\frac{2}{3}$$ $$2\frac{2}{3}$$ $$1$$ $$\frac{1}{3}$$ + + $$10$$ $$5\frac{1}{5}$$ $$2\frac{3}{5}$$ $$1\frac{2}{5}$$ $$1$$ + + $$12\frac{1}{4}$$ $$2\frac{1}{4}$$ $$4\frac{1}{2}$$ $$1\frac{1}{2}$$ $$1$$ 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. + + $$3\frac{1}{4}$$ $$\frac{3}{4}$$ $$\frac{5}{6}$$ $$\frac{1}{3}$$ $$\frac{1}{2}$$
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This is Partial Pyramids level 3. You can also try:
Level 1 Level 2

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Description of Levels

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Level 1 - Adding positive whole numbers

Level 2 - Adding directed numbers

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

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

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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.

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.

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