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Addition in Year 5 (age 9-10)

Plenty of tricky mental and written subtraction here!

Children will enjoy showing off their high level of mental arithmetic. Quick mental methods are extended to larger numbers, including addition of two, 2-digit numbers. The standard written method should now be used efficiently, including numbers with decimals.

Revise addition skills

Revise mental addition skills.

Adding several small numbers

Using mental methods to add several small numbers.

Mental addition of decimals

Using mental methods to add simple decimals.

Mental addition of large numbers

Adding larger numbers 'in your head' including thousands.

Written addition

Use the formal written method to add whole numbers, including numbers with over 4 digits.

Written addition of decimals

Use the formal written method to add decimals.

Problem solving

Investigating addition and problem solving.

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