Skill: Subtract a 1-digit number from a 2-digit number without regrouping
Explanation and Free Practice Resources
The learner understands that subtracting a one-digit number from a two-digit number without regrouping removes part of the ones place while leaving the tens place unchanged because the minuend’s ones digit is at least as large as the number subtracted. Place-value representations and number lines show the relationship between the original quantity, the amount removed, and the difference; cases requiring composing a ten, larger numbers, and generalized subtraction algorithms are not included.
On this page:
- Learn “Subtract a 1-digit number from a 2-digit number without regrouping” with a detailed explanation of the concept
- Master “Subtract a 1-digit number from a 2-digit number without regrouping” with unlimited, free practice problems
- Download (or modify) a free worksheet on Subtract a 1-digit number from a 2-digit number without regrouping you can use at home or in class with practice problems that scaffold and explore “Subtract a 1-digit number from a 2-digit number without regrouping” from different perspectives.
- Start working on adaptive units like “Base Ten Blocks - Counting Intro” or “Number Sense - Basics” that introduce, teach, or practice “Subtract a 1-digit number from a 2-digit number without regrouping” to maximize your learning.
Detailed Explanation: Subtract a 1-digit number from a 2-digit number without regrouping
To subtract a 1-digit number from a 2-digit number without regrouping:
- Look at the ones digits.
- Subtract the 1-digit number from the ones digit.
- Keep the tens digit the same.
Example:
Write as tens and ones:
Subtract ones from ones:
The tens stay the same, so:
Therefore,
You can also count back 4 on a number line:
So, the answer is .
Learn by doing: Subtract a 1-digit number from a 2-digit number without regrouping
Click a topic below to practice the foundational skills you'll need, learn the steps, or master this skill
Your results
Practice with unlimited practice problems
Practice:
Subtraction - Whole Number 2 x 1 - Columns, No Borrow
Earned ?
Download/Modify Free Grade 2 'Subtract a 1-digit number from a 2-digit number without regrouping' Worksheet
Print this free 'Subtract a 1-digit number from a 2-digit number without regrouping' worksheet to practice this skill away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Subtraction - Whole Number 2 x 1 - Columns, No Borrow
- Subtraction - Whole Number 2 x 1, No Borrow
- Subtraction - Whole Number - Subtract Multiple of 10 from a Number - Columns
- Subtraction - Whole Number - Subtract 10 from a Number
- Subtraction - Whole Number - Subtract 10 from a Number - Columns
- Subtraction - Whole Number - Subtract Multiples of 10
Units Teaching This Skill
These adaptive units introduce, teach, or reinforce this skill (Subtract a 1-digit number from a 2-digit number without regrouping) through scaffolded problems that grow in difficulty as concepts are understood.