Numbers to 100: A Quick Quiz for Grade 1 and Grade 2
A short 8-question quiz that checks whether you understand numbers to 100 — tens and units, comparing, addition and subtraction.
How Numbers to 100 Are Built
Numbers to 100 aren't just a sequence to memorize — they're built from tens and units, and that's exactly why one number is bigger than another and why addition sometimes "carries over" into the next ten. Take 47: it is 4 full tens (four bundles of ten) plus 7 loose units, which is why it sits between 40 and 50, and why adding 3 more fills the units up and carries you over to a brand-new ten, 50. This quiz checks whether you understand how numbers work, not just whether you can recite them. Take it easy: the first questions are simple, and the last ones need a bit of thinking.
Quiz: Numbers to 100
1. Which number comes right after 39?
- 30
- 40
- 49
Answer
40
After 39, the units fill up and a new ten is formed — 40.
2. In the number 74, the digit 7 stands for:
- 7 units
- 7 tens
- 7 hundreds
Answer
7 tens
In a two-digit number, the first digit counts the tens, so 74 is 70 plus 4.
3. Mia has 3 boxes of 10 pencils each, plus 5 loose pencils. How many pencils does she have?
- 35
- 53
- 85
Answer
35
3 tens and 5 units make 35.
4. Why is 52 bigger than 49, even though 9 is bigger than 2?
- Because we compare the tens first, and 5 tens is more than 4
- Because 52 is a longer number
- Because 2 is always a stronger digit than 9
Answer
Because we compare the tens first, and 5 tens is more than 4
With two-digit numbers, the tens decide first, and the units only matter if the tens are equal.
5. Jack works out 28 + 5 and gets 33. What's the easiest way he could have done it?
- He added 2 to make 28 up to 30, then added the 3 that was left
- He added 2 + 8 + 5
- He subtracted 5 from 28 and then added 10
Answer
He added 2 to make 28 up to 30, then added the 3 that was left
It's handy to reach a round ten first and add the rest: 28 + 2 = 30, 30 + 3 = 33.
6. Martin has $4. He buys a notebook for $2 and a pencil for $1. How many dollars does he have left?
- $1
- $2
- $3
Answer
$1
2 + 1 = 3, and 4 − 3 = 1, so $1 is left.
7. Which of these numbers could NOT be the correct answer to 58 − 6, even without calculating?
- 64
- 55
- 52
Answer
64
In subtraction, the result is always smaller than 58, and 64 is bigger — you can see that without working the sum out.
8. You swap the digits of 46 and get 64. By how much has the number changed?
- It has increased by 18
- It has increased by 20
- It has stayed the same, just rearranged
Answer
It has increased by 18
64 − 46 = 18, because swapping digits changes the value, not just their order.