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Common Core: 1st Grade Math : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer to One, Two, Three, Four, Five, Six, Seven, Eight, or Nine Tens: CCSS.MATH.CONTENT.1.NBT.B.2.C

Study concepts, example questions & explanations for Common Core: 1st Grade Math

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All Common Core: 1st Grade Math Resources

7 Diagnostic Tests 180 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #1 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 10? $\displaystyle 10?$

Possible Answers:

Five

One

Two

Six

Ten

Correct answer:

One

Explanation:

There is a $\displaystyle 1$ in the tens place which means there is one ten in the number 10. $\displaystyle 10.$

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Example Question #1 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 30? $\displaystyle 30?$

Possible Answers:

Three

Five

Four

Thirteen

Thirty

Correct answer:

Three

Explanation:

There is a $\displaystyle 3$ in the tens place which means there are three tens in the number 30. $\displaystyle 30.$

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Example Question #1 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 20? $\displaystyle 20?$

Possible Answers:

Three

Twelve

Twenty

Two

One

Correct answer:

Two

Explanation:

There is a $\displaystyle 2$ in the tens place which means there are two tens in the number 20. $\displaystyle 20.$

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Example Question #2 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 40? $\displaystyle 40?$

Possible Answers:

Six

Fourteen

Four

Forty

Five

Correct answer:

Four

Explanation:

There is a $\displaystyle 4$ in the tens place which means there are four tens in the number 40. $\displaystyle 40.$

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Example Question #3 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 50? $\displaystyle 50?$

Possible Answers:

Seven

Six

Five

Fifty

Three

Correct answer:

Five

Explanation:

There is a $\displaystyle 5$ in the tens place which means there are five tens in the number 50. $\displaystyle 50.$

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Example Question #1 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 80? $\displaystyle 80?$

Possible Answers:

Eight

Eighty

Six

Sixty

Four

Correct answer:

Eight

Explanation:

There is a $\displaystyle 8$ in the tens place which means there are eight tens in the number 80. $\displaystyle 80.$

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Example Question #6 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 90? $\displaystyle 90?$

Possible Answers:

Nine

Three

Four

Forty

Ninty

Correct answer:

Nine

Explanation:

There is a $\displaystyle 9$ in the tens place which means there are nine tens in the number 90. $\displaystyle 90.$

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Example Question #2 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 29? $\displaystyle 29?$

Possible Answers:

Three

Twenty

Twenty-nine

Nine

Two

Correct answer:

Two

Explanation:

There is a $\displaystyle 2$ in the tens place which means there are two tens in the number 29. $\displaystyle 29.$

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Example Question #4 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 53? $\displaystyle 53?$

Possible Answers:

Fifty-three

Three

Fifty

Thirty

Five

Correct answer:

Five

Explanation:

There is a $\displaystyle 5$ in the tens place which means there are five tens in the number 53. $\displaystyle 53.$

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Example Question #5 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

How many tens are in the number 13? $\displaystyle 13?$

Possible Answers:

Thirteen

Three

Ten

One

Three

Correct answer:

One

Explanation:

There is a $\displaystyle 1$ in the tens place which means there is one ten in the number 13. $\displaystyle 13.$

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All Common Core: 1st Grade Math Resources

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Common Core: 1st Grade Math : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer to One, Two, Three, Four, Five, Six, Seven, Eight, or Nine Tens: CCSS.MATH.CONTENT.1.NBT.B.2.C

Study concepts, example questions & explanations for Common Core: 1st Grade Math

All Common Core: 1st Grade Math Resources

Example Questions

Example Question #1 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

Example Question #1 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

Example Question #1 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

Example Question #2 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

Example Question #3 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

Example Question #1 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

Example Question #6 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

Example Question #2 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

Example Question #4 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

Example Question #5 : Numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 Refer To One, Two, Three, Four, Five, Six, Seven, Eight, Or Nine Tens: Ccss.Math.Content.1.Nbt.B.2.C

All Common Core: 1st Grade Math Resources

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