Common Core: 1st Grade Math : Number & Operations in Base Ten

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

varsity tutors app store varsity tutors android store

Example Questions

Example Question #1 : Number & Operations In Base Ten

What number is one hundred twenty? 

Possible Answers:

\(\displaystyle 121\)

\(\displaystyle 10020\)

\(\displaystyle 122\)

\(\displaystyle 10022\)

\(\displaystyle 120\)

Correct answer:

\(\displaystyle 120\)

Explanation:

In number form, one hundred twenty is \(\displaystyle 120.\)

Example Question #811 : Common Core Math: Grade 1

What number is ninety-nine? 

Possible Answers:

\(\displaystyle 99\)

\(\displaystyle 998\)

\(\displaystyle 909\)

\(\displaystyle 98\)

\(\displaystyle 999\)

Correct answer:

\(\displaystyle 99\)

Explanation:

In number form, ninety-nine is \(\displaystyle 99\).

Example Question #812 : Common Core Math: Grade 1

What number is twenty-three? 

Possible Answers:

\(\displaystyle 22\)

\(\displaystyle 23\)

\(\displaystyle 203\)

\(\displaystyle 202\)

\(\displaystyle 24\)

Correct answer:

\(\displaystyle 23\)

Explanation:

In number form, twenty-three is \(\displaystyle 23.\)

Example Question #2 : Extend The Counting Sequence

What number is forty-two? 

Possible Answers:

\(\displaystyle 403\)

\(\displaystyle 43\)

\(\displaystyle 402\)

\(\displaystyle 42\)

\(\displaystyle 404\)

Correct answer:

\(\displaystyle 42\)

Explanation:

In number form, forty-two is \(\displaystyle 42.\)

Example Question #3 : Extend The Counting Sequence

What number is nineteen? 

Possible Answers:

\(\displaystyle 9\)

\(\displaystyle 8\)

\(\displaystyle 17\)

\(\displaystyle 19\)

\(\displaystyle 18\)

Correct answer:

\(\displaystyle 19\)

Explanation:

In number form, nineteen is \(\displaystyle 19\).

Example Question #814 : Common Core Math: Grade 1

What number is one hundred thirteen? 

Possible Answers:

\(\displaystyle 133\)

\(\displaystyle 103\)

\(\displaystyle 10013\)

\(\displaystyle 113\)

\(\displaystyle 130\)

Correct answer:

\(\displaystyle 113\)

Explanation:

In number form, one hundred thirteen is \(\displaystyle 113\).

Example Question #1 : Number & Operations In Base Ten

What number is fifty-seven? 

Possible Answers:

\(\displaystyle 506\)

\(\displaystyle 507\)

\(\displaystyle 56\)

\(\displaystyle 57\)

\(\displaystyle 5007\)

Correct answer:

\(\displaystyle 57\)

Explanation:

In number form, fifty-seven is \(\displaystyle 57\).

Example Question #4 : Number & Operations In Base Ten

What number is seventy-eight? 

Possible Answers:

\(\displaystyle 78\)

\(\displaystyle 708\)

\(\displaystyle 706\)

\(\displaystyle 76\)

\(\displaystyle 7006\)

Correct answer:

\(\displaystyle 78\)

Explanation:

In number form, seventy-eight is \(\displaystyle 78.\)

Example Question #5 : Number & Operations In Base Ten

What number is eighty-nine?

Possible Answers:

\(\displaystyle 806\)

\(\displaystyle 8006\)

\(\displaystyle 89\)

\(\displaystyle 809\)

\(\displaystyle 86\)

Correct answer:

\(\displaystyle 89\)

Explanation:

In number form, eighty-nine is \(\displaystyle 89.\)

Example Question #6 : Number & Operations In Base Ten

What number is one hundred eleven? 

Possible Answers:

\(\displaystyle 10011\)

\(\displaystyle 111\)

\(\displaystyle 112\)

\(\displaystyle 11\)

\(\displaystyle 1111\)

Correct answer:

\(\displaystyle 111\)

Explanation:

In number form, one hundred eleven is \(\displaystyle 111\).

Learning Tools by Varsity Tutors