A joining situation represents a quantity increasing when another whole-number quantity is added, so the total is the sum of the starting amount and the amount joined, as in . The relationship can be modeled with drawings, ten-frames, number lines, or equations, with attention to distinguishing the initial amount, added amount, and total; problems involve sums within 20 and do not extend to larger numbers or generalized unknown-change cases.
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- Learn “Solve joining word problems” with a detailed explanation of the concept
- Master “Solve joining word problems” with unlimited, free practice problems
- Download (or modify) a free worksheet on Solve joining word problems you can use at home or in class with practice problems that scaffold and explore “Solve joining word problems” from different perspectives.
- Start working on adaptive units like “Picture Numbers - Addition Intro” or “Picture Numbers - Subtraction Intro” that introduce, teach, or practice “Solve joining word problems” to maximize your learning.
Detailed Explanation: Solve joining word problems
A joining problem tells you that some are there at the start, and then more are added.
Look for:
- Starting amount: how many there are first
- Amount joined: how many more are added
- Total: how many there are altogether
Example:
There are birds on a fence. Then more birds join them. How many birds are there now?
- Start with birds.
- Add the birds that join.
- Write an addition equation:
You can also count on from five times:
So, there are birds altogether.
Learn by doing: Solve joining word problems
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Practice with unlimited practice problems
Practice:
Picture Numbers - Adding - Picture to Number (Within 20)
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Download/Modify Free Grade 1 'Solve joining word problems' Worksheet
Print this free 'Solve joining word problems' worksheet to practice this skill away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Picture Numbers - Adding - Picture to Number (Within 20)
- Picture Numbers - Adding - Picture to Word (Within 20)
- Picture Numbers - Adding - Picture to Number (Within 10)
- Picture Numbers - Adding - Picture to Word (Within 10)
- Picture Numbers - Adding - Picture to Equation (Within 10)
- Addition - Whole Number - Within 10
- Addition - Whole Number - Within 5 - Column
- Addition - Whole Number - Number Bonds to 5
Units Teaching This Skill
These adaptive units introduce, teach, or reinforce this skill (Solve joining word problems) through scaffolded problems that grow in difficulty as concepts are understood.