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C: 1 2 3 4 5 6 8 9 10 11 15 16 18 19 20 21
Order, add, subtract, multiply and divide positive and negative numbers
Whiteboard Worksheets activity

An example of a wall puzzle
An example of a wall puzzle: five numbers are on the wall. Write the five numbers below the wall on the right bricks in the wall.

Years 8 and 9 (age 12-14)
Wall puzzles

The number on a brick is either the sum, difference or product of the two numbers below.
There are 6 levels of difficulty going from showing 5 numbers on the wall (the easiest) to showing none of the numbers on the wall.
Use the slider to determine how many numbers are on the wall then click on the 'change' button. You will only see the effect when the worksheet is printed

There are two types of worksheet:

C1a: The numbers on the bricks are the sum of the two numbers below
C1b:
The numbers on the bricks are the product, sum or difference of the two numbers below

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Example of sum puzzle
An example of a sum puzzle

Load the worksheet

Year 7 (age 11-12)

C2: Sum puzzle
Add and subtract positive and negative numbers. Write a number in each circle so that the number in each square equals the sum of the two numbers on either side of it.


C18:
Another sum puzzle
The three numbers in each line must add up to the same total. The total can be shown or hidden.
The number options are: 1. Small whole numbers 2. Multiples of ten 3. Decimals 4 Positive and negative numbers.
Use the other buttons to show a few puzzles or just one.

C21: Grid totals
The three numbers in each row and column must add up to the same total. The missing numbers are given. Select how many numbers are shown.

Year 8 (age 12-13)

C3: Product puzzle 1 Multiply positive and negative numbers. Write a number in each circle so that the number in each square equals the product of the two numbers on either side of it.

Link to the worksheet

Years 7-8 (age 11-13)
Sum, Difference and Product

C5: A problem-solving activity
Two numbers (positive or negative) are generated, their sum, difference and product are worked out.
Work out what the two numbers are.

Link to worksheet

Year 8 (age 12-11)
Complete this multiplication table. Positive and negative numbers are used.

C6: Multiplication table 1

Example of magic square

Year 7 (age 11-12)

C8: Missing numbers:
Type 1 Questions such as: -12 + -7 =
Type 2 Questions such as: -12 + Missing number box = -19

Complete the magic squares

C9: 3 x 3 magic square
C10:
4 x 4 magic square

Link to Number Cells Puzzles

Year 7 (age 11-12)
Number cell puzzles: the empty cells are filled by adding the two preceding numbers.

C11: Number cell puzzles

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Recognise multiples
Whiteboard Worksheets activity
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Year 7 (age 11-12)

C15: Find the lowest common multiple of two numbers, eg 16 and 24

C16: Find the highest common factor of two numbers, eg 36 and 27

Example of product puzzle

Investigate problems such as:

Year 7 (age 11-12)
Write a number in each circle so that the number in each square equals the product of the two numbers on either side of it.

C4a: Product puzzle 1 numbers up to 12
C4b: Product puzzle 2 numbers up to 20

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Use index notation
Whiteboard Worksheets activity
Find the value of n
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Find the value of n

Years 9-11 (age 14-16)
Know and use the general forms of the index laws for multiplication and division of integer powers.

C19: Find the value of n two levels of difficulty (see the examples on the left)

C20: More difficult questions two levels of difficulty

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