Numbers 11-20: Place Value (Tens and Ones)

Free sample questions, a clear explanation, and 5 practice skills with an AI tutor that guides without giving the answer away.

Sample questions

1. Look at the picture: You see 1 bundle of 10 sticks and 3 loose sticks. How many sticks are there in total?

○ 3

○ 10

○ 31

✓ 13

Answer: 13 — Count the group of ten first, then count the extra ones.

2. You have 1 group of 10 blocks and 5 single blocks. What number do they make?

✓ 15

○ 5

○ 10

○ 51

Answer: 15 — Remember, one group of ten is worth 10!

3. Which description shows the number 12?

○ 1 group of 10 and 1 one

✓ 1 group of 10 and 2 ones

○ 1 group of 10 and 3 ones

○ 2 groups of 10

Answer: 1 group of 10 and 2 ones — Break the number 12 into a group of ten and some ones.

Count and represent quantities 11-20 using concrete objects grouped into tens and ones.
Identify the number of tens and ones in numbers 11-20 using place value charts.
Read and write numerals 11-20.
Decompose numbers 11-20 into tens and ones (e.g., 17 is 1 ten and 7 ones).
Explain why 1 ten and 4 ones is the same as 14, using a bundle of sticks and loose sticks.

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