Are these textbook or past exam questions?

No. Every item is written by TutorZone and is not taken from any textbook, past paper or official marking scheme.

How should a child follow up on a wrong answer?

Read the one-line note, then redo a similar item to check the make-ten step and the order of addends.

How is Paper 4 different from Papers 1 to 3?

Paper 4 reviews the commonest mistakes: forgetting the leftover after making ten and moving the wrong way on a number line.

P1 Maths Addition within 20 Paper 4: Error Review

2026-11-09

Tutor Prep Guide · P1 Maths

Ten original items, each with an answer and a one-line explanation.

Direct answers　Items 1-3 are basic, 4-6 intermediate and 7-9 challenge, with item 10 as the error review. Time yourself first, then check each answer and redo what is wrong.

01　Paper details (check answers afterwards)

Item	Detail
Questions	10
Suggested time	20
Difficulty mix	Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1
Chapter	Chapter: P1 Maths: Addition within 20
Level	P1

02　Questions (10 items)

Foundation8 + 7 = ?
Foundation9 + 6 = ?
Foundation7 + 7 = ?
Intermediate6 + 8 = ?
Intermediate5 + 9 = ?
Intermediate4 + 7 + 5 = ?
ChallengeMing has 8 sweets and his mother gives him 5 more. How many does he have?
Challenge12 + 6 = ?
ChallengeDo 7 + 9 and 9 + 7 give the same answer? What is it?
Error redoReview: a pupil answers 12 for 9 + 4. What is correct?

03　Answers and one-line notes

#	Answer	One-line note
1	15	Make ten: 8 + 2 = 10, then add the remaining 5 to get 15.
2	15	9 + 1 = 10, then add 5 more to get 15.
3	14	Doubling 7 gives 14.
4	14	6 + 4 = 10 and 4 are left over, so 14.
5	14	Treat 9 as 10 then take 1 back: 5 + 10 − 1 = 14.
6	16	4 + 7 = 11, then add 5 to get 16.
7	13 sweets	8 + 5 = 13.
8	18	The ones give 2 + 6 = 8 and the ten stays, so 18 with no carrying.
9	Yes, both are 16	Swapping the addends does not change the sum, so both give 16.
10	13	9 + 1 = 10 and 3 are left, so 13; answering 12 loses one.

04　What to do after marking

After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
Repeat the same item two days later; move to the next paper only when both attempts are correct.
Parents only need the answer and note columns; there is no need to explain every item.

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Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.