Small facts, strong connections
Practice accurate addition and subtraction within ten.
Explore this lesson →10 practice questions · Optional read aloud · Thinking pad
Let’s understand the idea.
- Choose a strategy that makes sense to you: counting, equal pairs or related facts.
- Explain how you know, then check the answer another way.
- Practice helps familiar facts become easier. You do not need to race.
Something to notice
Observe accurate, flexible and increasingly effortless addition/subtraction within ten across fresh examples and strategies. These questions do not automatically certify fluency; no timer is used.
Try it. Change it. Explain it.
Open the lesson to use its pictures and controls. In How it works, connect the picture to the idea. In Play & discover, change the quantities and notice what stays the same. In Your turn, answer questions and use the explanation to check your reasoning.
You can ask for help, draw on the thinking pad, or listen to the question and answer options. Progress distinguishes independent work from work completed with help.
Let’s try it →Curriculum connection
Grade 1 · 1.OA · US Common Core
This lesson is mapped to these standards. A completed activity is practice evidence, not a claim of mastery. Content is checked against the linked official standards and its mathematical models are tested.