Addition and Subtraction

Addition and subtraction are the two operations you will use most frequently on the SET 11+ maths papers. Stage 1 requires speed and accuracy with multiple-choice questions, while Stage 2 demands clear written working. This lesson covers the essential methods and gives you strategies to avoid common errors.

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Column Addition

Column addition is the standard written method. Line up the digits by place value and add from right to left, carrying where necessary.

Worked Example

Calculate 4,687 + 2,759.

	Th	H	T	O
	4	6	8	7
+	2	7	5	9
	7	4	4	6

• Ones: 7 + 9 = 16. Write 6, carry 1.
• Tens: 8 + 5 + 1 = 14. Write 4, carry 1.
• Hundreds: 6 + 7 + 1 = 14. Write 4, carry 1.
• Thousands: 4 + 2 + 1 = 7.

Answer: 7,446

Top Tip: Always double-check your carrying. A single missed carry is the most common reason for losing marks on addition questions.

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