Mathematics Grade 1 15 min

Write numbers as tens and ones

Write numbers as tens and ones

What you'll learn

  • Identify the tens digit in a two-digit number with 80% accuracy.
  • Identify the ones digit in a two-digit number with 80% accuracy.
  • Represent a two-digit number (between 10 and 39) using base-ten blocks (rods and units) with 75% accuracy.
  • Explain, using drawings or manipulatives, how a two-digit number is made up of tens and ones for at least 3 out of 4 numbers.

Tutorial Preview

1

How many tens and ones are in 23?

2

How many tens and ones are in 40?

3

How many tens and ones are in 17?

Sample Practice Questions

Easy
How many tens and ones are in 14?
0.1 ten 4 ones
1.4 tens 1 one
2.1 ten 0 ones
3.0 tens 4 ones
Easy
How many tens and ones are in 25?
0.5 tens 2 ones
1.2 tens 0 ones
2.1 ten 5 ones
3.2 tens 5 ones
Easy
How many tens and ones are in 16?
0.6 tens 1 one
1.1 ten 6 ones
2.0 tens 6 ones
3.1 ten 0 ones

Want to practice and check your answers?

Sign up to access all questions with instant feedback, explanations, and progress tracking.

Start Practicing Free

More from Place values

Mathematics for other grades

Frequently asked questions

What grade level is "Write numbers as tens and ones"?

Write numbers as tens and ones is a Grade 1 Mathematics lesson on ExcelOS.

What will I learn in Write numbers as tens and ones?

You'll be able to: Identify the tens digit in a two-digit number with 80% accuracy; Identify the ones digit in a two-digit number with 80% accuracy; Represent a two-digit number (between 10 and 39) using base-ten blocks (rods and units) with 75%….

Is "Write numbers as tens and ones" free to practice?

Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.

How many practice questions are included with Write numbers as tens and ones?

This lesson includes 28 practice questions across multiple difficulty levels, each with instant feedback and explanations.

Ready to find your learning gaps?

Take a free diagnostic test and get a personalized learning plan in minutes.