This medium worksheet steps up the difficulty with one-more and one-less reasoning across the full 120 range. Part A's nine fill-in-blank questions ask students to find 1 more than 89, 1 less than 111, the missing number in 98, 99, ___, 101, and the next term in 70, 80, 90, ___ counting by tens. Part B is a four-pair matching activity that connects clues like 'The number after 119' and 'Ten more than 50' to answers including 120, 60, 79, and 100. Solid practice for the bridge across 100 and the 89-to-90 decade jump.
Style:
Counting & Writing Numbers to 120
Part A: Fill in the Blank
Write the missing word or number on each line.
1. What number is 1 more than 89? 90
2. What number is 1 less than 111? 110
3. Fill in: 56, 57, 58, 59
4. Fill in: 98, 99, 100, 101
5. Count by tens: 10, 20, 30, 40
6. What is 10 more than 105? 115
7. Fill in: 114, 115, 116, 117
8. What is 1 more than 99? 100
9. Count by tens: 70, 80, 90, 100
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
The number after 99
→ 100
120
Ten more than 50
→ 60
60
One less than 80
→ 79
79
The number after 119
→ 120
100
Counting & Writing Numbers to 120
★ Part A: Fill in the Blank
Write the missing word or number on each line.
1) What number is 1 more than 89? 90
2) What number is 1 less than 111? 110
3) Fill in: 56, 57, 58, 59
4) Fill in: 98, 99, 100, 101
5) Count by tens: 10, 20, 30, 40
6) What is 10 more than 105? 115
7) Fill in: 114, 115, 116, 117
8) What is 1 more than 99? 100
9) Count by tens: 70, 80, 90, 100
★ Part B: Matching
Match each item on the left to the correct answer on the right.
1) Match each item to its correct answer.
The number after 99
→ 100
120
Ten more than 50
→ 60
60
One less than 80
→ 79
79
The number after 119
→ 120
100
Ready to Practice?
Complete each section carefully.
10 Questions
10-15 minutes
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