Fun with Numbers (Numbers 21 to 99)
CBSE · Class 1 · Mathematics
Flashcards for Fun with Numbers (Numbers 21 to 99) — CBSE Class 1 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.
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What number comes after 20?
Answer
21 (twenty-one). This is the first number after 20 and it has 2 tens and 1 one.
How many tens and ones are in the number 25?
Answer
25 has 2 tens and 5 ones. We can write it as 2 tens + 5 ones = 25.
Count from 21 to 30. Which numbers are missing? 21, 22, 24, __, 26, __, 28, 29, 30
Answer
The missing numbers are 25 and 27. The complete sequence is: 21, 22, 23, 24, 25, 26, 27, 28, 29, 30.
What is the largest number between 31 and 40?
Answer
39 is the largest number between 31 and 40. It has 3 tens and 9 ones.
How do you write forty-five in numbers?
Answer
Forty-five is written as 45. It has 4 tens (40) and 5 ones (5).
Which number comes before 50?
Answer
49 comes before 50. We can count: 47, 48, 49, 50.
If you have 5 groups of 10 objects each, how many objects do you have in total?
Answer
5 groups of 10 = 50 objects. This shows us that 50 has 5 tens and 0 ones.
Count from 51 to 60. What comes after 55?
Answer
After 55 comes 56. The sequence is: 51, 52, 53, 54, 55, 56, 57, 58, 59, 60.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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