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Unit: Addition and subtraction

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Relate addition and subtraction

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Relating addition and subtraction
(Opens a modal)

Practice

Relate addition and subtractionGet 5 of 7 questions to level up!

Addition within 20

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Practice

Add within 20Get 5 of 7 questions to level up!
Add 3 numbersGet 5 of 7 questions to level up!

Subtraction within 20

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Subtracting 14 - 6
(Opens a modal)

Practice

Subtract within 20Get 5 of 7 questions to level up!

Quiz 1

Level up on the above skills and collect up to 320 Mastery points

Equal sign

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Equal sign
(Opens a modal)

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Equal signGet 5 of 7 questions to level up!

Missing number within 20

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No videos or articles available in this lesson

Practice

Find missing number (add and subtract within 20)Get 5 of 7 questions to level up!

Quiz 2

Level up on the above skills and collect up to 160 Mastery points

Word problems within 20

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Practice

Addition and subtraction word problems 1Get 5 of 7 questions to level up!
Addition and subtraction word problems 2Get 5 of 7 questions to level up!

Word problems with "more" and "fewer"

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Practice

Add and subtract within 20 word problemsGet 5 of 7 questions to level up!
Word problems with "more" and "fewer" 2Get 5 of 7 questions to level up!

Quiz 3

Level up on the above skills and collect up to 320 Mastery points

Adding 1s and 10s

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Practice

Add 1 or 10Get 5 of 7 questions to level up!
Add 1s or 10s (no regrouping)Get 5 of 7 questions to level up!

Intro to addition with 2-digit numbers

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Practice

Adding up to four 2-digit numbersGet 3 of 4 questions to level up!
Break apart 2-digit addition problemsGet 3 of 4 questions to level up!
Regroup when adding 1-digit numbersGet 5 of 7 questions to level up!

Quiz 4

Level up on the above skills and collect up to 400 Mastery points

Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 1500 Mastery points!

About this unit

First, we will learn how addition and subtraction relate. Next, we will add and subtract numbers less than or equal to 20 and solve addition and subtraction word problems. Finally, we will begin adding 2-digit numbers.