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Pyramid

Week 4

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WALT: find the missing number. Work out the rule.

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Multiple Choice Algebra:

Work out the correct value of the picture or symbol in these number statements:

  1. X 5 = 35

= 6

​

= 5

​

= 7

Answer =

2. + 10 = 24

= 14

​

= 13

​

= 10

Answer =

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Multiple Choice Algebra:

Work out the correct value of the picture or symbol in these number statements:

  • + 15 = 30

= 10

​

= 15

​

= 20

Answer =

2. x 5 = 25

= 4

​

= 7

​

= 5

Answer =

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Multiple Choice Algebra:

Work out the correct value of the picture or symbol in these number statements:

  • + 6 = 16

= 9

​

= 10

​

= 8

Answer =

2. - 8 = 12

= 18

​

= 21

​

= 20

Answer =

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Number Patterns:

Example:

What are the missing numbers in this pattern? 30 26 22 ? ? 10

What is the rule for the pattern?

Answer 30 26 22 18 14 10

-4 -4 -4 -4 -4

The rule is ‘subtract 4’.

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Fill in the gaps for each of these patterns:

1. 4 10 16 ? 28 ?

+___ +___ +___ +___ +___

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The rule is _____________

2. 80 76 ? 68 ? 60

The rule is _____________

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Find the missing numbers in these:

Write the rule for each one. The first one has been done for you.

  1. 4, 7, 10, ___, 16, ___, ___ The rule is to add 3
  2. 8, 13, 18, ___, 28, 33, __, ___ The rule is:
  3. 2, 2 ½ , 3, 3 ½ , ___, 4 ½ , ___, ___ The rule is:
  4. 300, ____, 200, 150, ___, ____ The rule is:
  5. _____, 400, 200, ___, 50, ____ The rule is:
  6. 2, ___, 8, ___, 32, 64 The rule is:
  7. ___, ___, 9, 8 ½ , 8, 7 ½ , ____, _____ The rule is:

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Which is the incorrect number in each of these pattern?

What number should it be? The first one has been done for you.

  1. 4, 8, 12, 15, 20, 24 The answer is 15
  2. 1, 2, 4, 7, 16, 32, 64 The answer is ______
  3. 90, 86, 82, 79, 74, 70 The answer is ______
  4. 76, 67, 58, 47, 40, 31 The answer is ______
  5. 480, 240, 100, 60, 30, 15 The answer is ______
  6. ½ , 1, 1 ½ ,2, 2 ½ , 3, 4 The answer is _____

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Challenge:

Find the 10th number in each of these patterns. The first one has been done for you.

  1. 20, 24, 28, 32, … Answer = 56
  2. 48, 43, 38, 33, … Answer =
  3. 190, 170, 150, 130, 110, 90, … Answer =
  4. 1, 1 ½ , 2, 2 ½ ,3,... Answer =
  5. 1, 2, 4, 8, … Answer =
  6. 1, 2, 7, 2, 1, 2, 7, 2, … Answer =
  7. 1, 2, 2, 3, 3, 3, 4, 4, … Answer =

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Practice:

Once you have completed all the tasks, click on the image to practice more problems involving number and algebra:

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