Blandford St Mary Primary School Subtraction Pyramid
Children may find the difference using informal methods as shown below.
E.g. 136-87=49
Find one less than a number from 1 to 10. Begin to relate subtraction to ‘taking away’
Foundation
+3+40+68790130136
Understand subtraction as ‘take away’ and find a difference by counting up. Use informal written methods. E.g. 18-6=12-1-1-1-1-1-1 121314 151617181 18
Year 1
Mentally subtract a one-digit number from a two-digit number.
Year 2
Use informal written methods. E.g. 62-15=47
Understand subtraction as the inverse of addition and derive related facts.
-5-10475262
E.g. 18+6=24 24-6=18 Recall take away and difference facts for multiples of 10
Year 3
Use written methods to support and explain subtraction. E.g. 173-35=138
-5-30138143173
Mentally subtract pairs of two-digit numbers. E.g. 61 – 35. Use efficient written methods. 328 =300 20 E.g. 326-78 200 120 8- 76 = 70 6 252200 50 2
Year 4
2
Year 5
Use efficient written methods to subtract whole numbers and decimals.
7 12
E.g.782 - 3677 8 2-3 6 74 1 5
Mentally subtract whole numbers and decimals. E.g. 6.4 - 2.8
Year 6