How do I tell the tens digit from the ones digit?

From the right, the first digit is the ones and the second is the tens, so 68 has tens digit 6.

How do I compare two two-digit numbers?

Compare the tens digits first, and only compare the ones when the tens are equal.

What is the usual trap when counting to 100?

After a 9 you must carry: after 79 comes 80, with the ones becoming 0 and the tens going up by 1.

P1 Maths Numbers to 100 Paper 1: Basics

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	15
Difficulty mix	Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1
Chapter	Chapter: P1 Maths Numbers to 100
Level	P1

02　Questions (10 items)

FoundationWhat is the tens digit of 68?
FoundationWhat number is 5 tens and 7 ones?
FoundationCounting on: 45, 46, 47, 48. What comes next?
IntermediateWhat number is 1 more than 79?
IntermediateWhich is the largest of 36, 63 and 56?
IntermediateHow many tens are there in 90?
ChallengeUsing the digit cards 4 and 7 once each, what is the largest two-digit number you can make?
ChallengeStart at 58 and add 10 each time: 58, 68, … What is the third number?
ChallengeIn a two-digit number the tens digit is 6 and the ones digit is 2 less. What is the number?
Error redoError review: a pupil says 87 is smaller than 78 because its tens digit is 8. Is that right?

03　Answers and one-line notes

#	Answer	One-line note
1	6	In 68 the tens digit is 6 and the ones digit is 8.
2	57	5 tens make 50, and 7 more ones give 57.
3	49	Each step adds 1, so after 48 comes 49.
4	80	One more than 79 is 80: the ones digit goes 9 to 0 and the tens digit goes up by 1.
5	63	Compare the tens digits first: 6 is the largest, so 63 is the largest number.
6	9 tens	Ten ones make one ten, and 90 ÷ 10 = 9.
7	74	Put the larger digit 7 in the tens place and 4 in the ones place to get 74.
8	78	58 + 10 = 68, and 68 + 10 = 78.
9	64	The ones digit is 6 − 2 = 4, so the number is 64.
10	No, 87 is larger than 78	87 has tens digit 8 and 78 has tens digit 7, and 8 > 7, so 87 > 78.

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.