Automaticity subtraction to 10

Automaticity subtraction to 10

Learn to quickly and correctly solve subtraction problems to 10.

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Automaticity subtraction to 10

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Students learn to solve subtraction problems to 10 quickly and correctly.



Learning objective

Students will be able to quickly and correctly solve subtraction problems to 10 in their heads.


Practice two subtraction problems with the students by solving them using the visual support provided on the interactive whiteboard.


Explain to students what automaticity is, and what automaticity in subtraction problems means. Tell students that they are going to practice solving subtraction problems in their head within a given time. The goal is to solve the subtraction problem within 5, 4, and even 3 seconds. Start by discussing the three problems, the first in 5 seconds, then 4, and finally in 3 seconds. Then ask students to solve the problems within those times and discuss the answers. Tell students that have trouble solving within time that this is something that improves with practice. Then challenge the class to solve the set of three problems within 15 seconds and then four problems within 20 seconds.

Check that students are able to quickly and correctly solve subtraction problems to 10 by asking the following questions:
- Why is it useful to be able to quickly solve subtraction problems?
- How can you make sure that you get better and faster at solving subtraction problems?


Students practice with sets of subtraction problems and are challenged to complete them in progressively less time.


Explain the subtraction ball game: a student throws the ball to a classmate and says a subtraction problem. The student who catches the ball has to give the answer within 5, 4, or 3 seconds. They then throw the ball to another classmate and name their own subtraction problem.

Teaching tips

Students who have difficulty solving the subtraction problems within 5 seconds can first be given the task of practicing subtraction problems to 10 without any time limits. Then you can start by having them solve a problem in 30 seconds, 25 seconds, 20 seconds, etc.

Instruction materials

A ball.

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About Gynzy

Gynzy is an online teaching platform for interactive whiteboards and displays in schools.

With a focus on elementary education, Gynzy’s Whiteboard, digital tools, and activities make it easy for teachers to save time building lessons, increase student engagement, and make classroom management more efficient.

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