Common Core: 1st Grade Math : Operations & Algebraic Thinking

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

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Example Questions

Example Question #61 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 3\) to get \(\displaystyle 9?\)

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 4\)

\(\displaystyle 5\)

Correct answer:

\(\displaystyle 6\)

Explanation:

\(\displaystyle 3+6=9\) or as a subtraction problem, \(\displaystyle 9-3=6\)

Example Question #62 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 6\) to get to \(\displaystyle 18?\) 

Possible Answers:

\(\displaystyle 12\)

\(\displaystyle 11\)

\(\displaystyle 10\)

Correct answer:

\(\displaystyle 12\)

Explanation:

\(\displaystyle 6+12=18\) or as a subtraction problem, \(\displaystyle 18-6=12\).

Example Question #63 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 14\) to get \(\displaystyle 16?\)

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 2\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 2\)

Explanation:

\(\displaystyle 14+2=16\) or as a subtraction problem, \(\displaystyle 16-14=2\).

Example Question #64 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 13\) to get to \(\displaystyle 20?\)

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 7\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 7\)

Explanation:

\(\displaystyle 13+7=20\) or as a subtraction problem, \(\displaystyle 20-13=7\).

Example Question #65 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 12\) to get to \(\displaystyle 18?\)

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 6\)

\(\displaystyle 5\)

Correct answer:

\(\displaystyle 6\)

Explanation:

\(\displaystyle 12+6=18\) or as a subtraction problem, \(\displaystyle 18-12=6\).

Example Question #66 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 12\) to get \(\displaystyle 16?\) 

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 5\)

\(\displaystyle 3\)

Correct answer:

\(\displaystyle 4\)

Explanation:

\(\displaystyle 12+4=16\) or as a subtraction problem, \(\displaystyle 16-12=4\).

Example Question #67 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 9\) to get to \(\displaystyle 19?\)

Possible Answers:

\(\displaystyle 9\)

\(\displaystyle 8\)

\(\displaystyle 10\)

Correct answer:

\(\displaystyle 10\)

Explanation:

\(\displaystyle 9+10=19\) or as a subtraction problem, \(\displaystyle 19-9=10\).

Example Question #68 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 12\) to get to \(\displaystyle 20?\) 

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 7\)

\(\displaystyle 8\)

Correct answer:

\(\displaystyle 8\)

Explanation:

\(\displaystyle 12+8=20\) or as a subtraction problem, \(\displaystyle 20-12=8\).

Example Question #69 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 5\) to get to \(\displaystyle 13?\) 

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 8\)

\(\displaystyle 7\)

Correct answer:

\(\displaystyle 8\)

Explanation:

\(\displaystyle 5+8=13\) or as a subtraction problem, \(\displaystyle 13-5=8\).

Example Question #70 : Operations & Algebraic Thinking

What can we add to \(\displaystyle 7\) to get \(\displaystyle 14?\)

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 7\)

\(\displaystyle 8\)

Correct answer:

\(\displaystyle 7\)

Explanation:

\(\displaystyle 7+4=14\) or as a subtraction problem, \(\displaystyle 14-7=7\).

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