Decomposing & Composing Numbers to 20
Flashcard
•
Mathematics
•
1st Grade
•
Practice Problem
•
Hard
+6
Standards-aligned
Wayground Content
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
What is decomposing a number?
Back
Decomposing a number means breaking it down into smaller parts or numbers that add up to the original number.
2.
FLASHCARD QUESTION
Front
What is composing a number?
Back
Composing a number means combining smaller numbers to make a larger number.
Tags
CCSS.1.OA.A.1
3.
FLASHCARD QUESTION
Front
What is the missing number in 3 + ___ = 13?
Back
10
Tags
CCSS.1.OA.A.1
4.
FLASHCARD QUESTION
Front
What is the missing number in 10 - ___ = 3?
Back
7
Tags
CCSS.1.OA.D.8
5.
FLASHCARD QUESTION
Front
What two numbers make 10?
Back
1 and 9, 2 and 8, 3 and 7, 4 and 6, 5 and 5.
Tags
CCSS.2.NBT.B.5
6.
FLASHCARD QUESTION
Front
What is an addend?
Back
An addend is a number that is added to another number.
Tags
CCSS.2.OA.C.3
7.
FLASHCARD QUESTION
Front
What is a sum?
Back
A sum is the result of adding two or more numbers together.
Tags
CCSS.6.EE.A.1
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