1st Grade Comparing Two-Digit Numbers Worksheet Solutions (PDF)
This comparing numbers answers for 1st Grade covers comparing two-digit numbers (Common Core 1.NBT.B.3), with a free PDF to print.
Grade 1 · Common Core State Standards: 1.NBT.B.3
Comparing numbers answers: exercises 1 to 10
Exercise 1 – Which group has more?
20 is 2 tens and 30 is 3 tens. 2 tens is less than 3 tens.
\(20 < 30\)
Exercise 2 – Tens decide
41 has 4 tens. 36 has 3 tens. 4 tens is more than 3 tens.
\(41 > 36\)
Exercise 3 – Compare 45 and 54
Tens: 4 and 5. The tens are different, so the bigger tens digit wins.
\(45 < 54\)
Exercise 4 – Same number
Tens: 6 and 6. Ones: 7 and 7. Both digits match, so the numbers are equal.
\(67 = 67\)
Exercise 5 – Switch the digits
Tens: 8 and 2. The tens are different, so the bigger tens digit wins.
\(82 > 28\)
Exercise 6 – Big ones, small tens
Tens: 3 and 4. The tens are different, so the bigger tens digit wins.
\(39 < 41\)
Exercise 7 – Zero ones
Tens: 9 and 1. The tens are different, so the bigger tens digit wins.
\(90 > 19\)
Exercise 8 – Same tens
Tens: 5 and 5. The tens match, so compare the ones. Ones: 3 and 8.
\(53 < 58\)
Exercise 9 – Circle the greater
Tens: 7 and 6. 7 is more than 6. 76 is greater (\(76 > 67\)).
Exercise 10 – Circle the lesser
Tens: 3 and 4. 3 is less than 4. 34 is lesser (\(34 < 43\)).
Exercises 11 and up
Exercise 11 – Number line
47 is to the right of 43, so 47 is greater.
\(43 < 47\) (or \(47 > 43\))
Exercise 12 – Missing digit
Both numbers have 7 tens. The ones in the first number must be less than 2. The digit can be 0 or 1 (70 and 71 work).
Exercise 13 – Order three numbers
Tens: 5, 8, 4. Least is 49, then 58, then 85. 49, 58, 85
Exercise 14 – Order from greatest
31 and 37 both have 3 tens, and 37 has more ones. 13 has only 1 ten. 37, 31, 13
Exercise 15 – Compare the ones
Ones: 2 and 8. 8 is more than 2. 68 has more ones, so \(62 < 68\).
Exercise 16 – True or false (a)
71 has 7 tens and 69 has 6 tens. 7 tens is more than 6 tens. True.
Exercise 17 – True or false (b)
45 has 4 tens and 38 has 3 tens, so 45 is greater than 38. False. The true sentence is \(45 > 38\).
Exercise 18 – Sticker books
63 has 6 tens. 36 has 3 tens. 6 tens is more than 3 tens.
Maya has more. \(63 > 36\)
Exercise 19 – Little League tickets
Tens: 4 and 5. 4 is less than 5, so 48 is less than 51. The Hawks sold fewer tickets. \(48 < 51\)
Exercise 20 – Pages read
Both have 2 tens and 9 ones. The numbers are equal. Neither. \(29 = 29\)
Exercise 21 – Jars of beads
Tens: 7, 2, 7. The jar with 2 tens has the fewest: 27. The other two have 7 tens. Their ones are 2 and 0, so 72 is more than 70. Most: 72 beads. Fewest: 27 beads.
Exercise 22 – Tens and ones story
Sofia: 54. Liam: 49. Tens: 5 and 4. 54 and 49, \(54 > 49\)
Exercise 23 – Fix the mistake
Diego looked at the ones first. Always compare the tens first. 19 has 1 ten and 21 has 2 tens. 19 is less than 21: \(19 < 21\)
Key facts behind this comparing numbers answers
- Compare the tens digits first.
- If the tens match, compare the ones digits.
- The signs are greater than, less than, and equal to.
- The open mouth of the sign points to the greater number.
- On a number line, the number farther right is greater.
How to use this comparing numbers answers
Cover each solution, solve the exercise again, then uncover it and compare every line. If your answer differs, find the first step that changed and redo the exercise from there.
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All Grade 1 chapters: Grade 1 math.
