Making ten to add means decomposing one addend so part combines with the other addend to form 10, or, for two-digit numbers, the next multiple of ten—for example, 8 + 5 = 8 + 2 + 3 = 13 and 27 + 6 = 27 + 3 + 3 = 33. This reasoning connects addition to place value, the associative and commutative properties, and flexible mental calculation within 100; it does not include generalized algorithms for larger numbers.
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- Learn “Make ten to add” with a detailed explanation of the concept
- Master “Make ten to add” with unlimited, free practice problems
- Download (or modify) a free worksheet on Make ten to add you can use at home or in class with practice problems that scaffold and explore “Make ten to add” from different perspectives.
- Start working on adaptive units like “Addition and Subtraction of Integers - 1 Digit” or “Ten Groups - Counting” that introduce, teach, or practice “Make ten to add” to maximize your learning.
Detailed Explanation: Make ten to add
To make ten, break apart one addend so that part of it joins the other addend to make .
Example: Find .
-
Ask, “How many more does need to make ?”
It needs . -
Break into and :
- Add the part that makes ten:
- Add the leftover part:
So,
Learn by doing: Make ten to add
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Practice with unlimited practice problems
Practice:
Addition - Whole Number 1 digit + 1 digit, With Carry
Earned ?
Download/Modify Free Grade 2 'Make ten to add' Worksheet
Print this free 'Make ten to add' worksheet to practice this skill away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Addition - Whole Number 1 digit + 1 digit, With Carry
- Addition - Whole Number 1 digit + 1 digit - Column, With Carry
- Ten Groups - Add, With Carry, Less than 20
- Addition - Whole Number - Within 20 - Column
- Base 10 Blocks - Adding - Picture to Answer, With Carry - Tens and Ones
- Ten Groups - To Next Ten, One Digit, Less than 10
- Addition - Whole Number - Number Bonds to 10
- Addition - Missing Value, To Multiples of Tens
Units Teaching This Skill
These adaptive units introduce, teach, or reinforce this skill (Make ten to add) through scaffolded problems that grow in difficulty as concepts are understood.