Adding Tens Worksheet
Practice adding tens to two-digit numbers using number lines and mental math strategies for Grade 2.
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Adding Tens
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Read each question carefully and answer. Remember to add the tens place!
Count by tens and fill in the missing numbers.
1. 10, 20, 30, , 50,
2. 40, , 60, 70,
3. , 80, 90, 100,
Use the number line to help you add. Draw jumps to show your work.
4. What is 25 + 10?
5. What is 38 + 20?
Add the tens using mental math.
6. 14 + 10 =
7. 32 + 20 =
8. 56 + 30 =
9. 71 + 10 =
10. 45 + 40 =
11. Which sum is correct?
23 + 10 = 33
23 + 10 = 24
23 + 10 = 32
23 + 10 = 13
12. If you have 47 candies and get 20 more, how many do you have in total?
57
67
49
70
Solve the word problems.
13. Sarah had 15 stickers. Her friend gave her 30 more stickers. How many stickers does Sarah have now?
14. A bus has 24 passengers. At the next stop, 20 more passengers get on. How many passengers are on the bus now?
Decide if each statement is true or false.
15. Adding 10 to a number always changes the ones digit.
True
False
16. 60 + 20 = 80.
True
False