One-to-One Correspondence - Worksheet 9 - Kindergarten

Hard

Match one object to one number when counting (Hard)

15 problems · 5-10 minutes · Skills: counting, cardinality

About This Worksheet

This hard-level worksheet contains 15 problems designed for Kindergarten students practicing one-to-one correspondence. Hard worksheets feature challenging problems including multi-step questions, missing values, and real-world applications to push students further.

Regular practice with worksheets helps students build fluency and confidence in essential math skills.

How to Solve: Worked Example

Example Problem: Solve the first problem on the worksheet.
Solution Steps:
  1. Read the problem carefully.
  2. Identify what is being asked.
  3. Use what you know to find the answer.
  4. Check your work.
Answer: See the answer key below
Tip: Take your time and read each problem carefully before answering!
1
19 + 17 =
2
20 + 17 =
3
16 + 8 =
4
5 + 17 =
5
1 + 19 =
6
19 + 3 =
7
4 + 10 =
8
18 + 17 =
9
17 + 18 =
10
11 + 11 =
11
8 + 8 =
12
8 + 17 =
13
4 + 12 =
14
20 + 16 =
15
9 + 3 =

Answer Key

1. 362. 373. 244. 225. 206. 227. 148. 359. 3510. 2211. 1612. 2513. 1614. 3615. 12

Frequently Asked Questions

How do I download this one-to-one correspondence - worksheet 9 worksheet?

Click the "Download PDF / Print" button at the top of the worksheet. You can save it as a PDF or print it directly. The answer key will be on a separate page.

How do I find worksheets at different difficulty levels?

Each subtopic has 10 worksheets: Worksheets 1-3 are Easy, 4-7 are Medium, and 8-10 are Hard. Start with Easy worksheets to build confidence, then progress to harder ones.

How many problems are on this worksheet?

This worksheet contains 15 problems. It typically takes 5-10 minutes to complete. An answer key with all solutions is included.