100 Square
An incredibly versatile teaching tool. You can change the start number and change the step size, then try and find the hidden number. Choose from several difficulty levels. Ask the children to discuss the different methods they could use to find the missing number.
Can be used to explore sequences (including negative numbers and decimals), multiplication tables, as well as reasoning about numbers.
For more addition and subtraction resources click here.
KS2 Primary Framework:
Year 3:
Count on from and back to zero in single–digit steps or multiples of 10 s (Block A)
Identify patterns and relationships involving numbers (Block B & E)
Derive and recall multiplication facts for the 2, 3, 4, 5, 6 and 10 times-tables (Block B)
Recognise multiples of 2, 5 or 10 up to 1000 (Block B)
Year 4:
Recognise and continue number sequences formed by counting on or back in steps of constant size (Block A)
Identify and use patterns, relationships and properties of numbers or shapes; investigate a statement involving numbers and test it with examples (Block B)
Year 5:
Count from any given number in whole-number and decimal steps, extending beyond zero when counting backwards (Block A)
Year 6:
Represent and interpret sequences, patterns and relationships involving numbers (Block B)