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Common Core: 2nd Grade Math : Mentally Add and Subtract 10 or 100 to a Given Number : CCSS.Math.Content.2.NBT.B.8

Study concepts, example questions & explanations for Common Core: 2nd Grade Math

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All Common Core: 2nd Grade Math Resources

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Example Questions

Example Question #1071 : Common Core Math: Grade 2

Solve the following:

$\frac{\begin{array}[b]{r}432\\ +\ 100\end{array}}{ }$ $\displaystyle \frac{\begin{array}[b]{r}432\\ +\ 100\end{array}}{ }$

Possible Answers:

332 $\displaystyle 332$

300 $\displaystyle 300$

500 $\displaystyle 500$

532 $\displaystyle 532$

442 $\displaystyle 442$

Correct answer:

532 $\displaystyle 532$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

2+0=2 $\displaystyle 2+0=2$

3+0=3 $\displaystyle 3+0=3$

4+1=5 $\displaystyle 4+1=5$

$\frac{\begin{array}[b]{r}432\\ +\ 100\end{array}}{\ \ \ \space 532}$ $\displaystyle \frac{\begin{array}[b]{r}432\\ +\ 100\end{array}}{\ \ \ \space 532}$

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Example Question #131 : How To Add

$\frac{\begin{array}[b]{r}349\\ +\ 100\end{array}}{?}$ $\displaystyle \frac{\begin{array}[b]{r}349\\ +\ 100\end{array}}{?}$

Possible Answers:

200 $\displaystyle 200$

400 $\displaystyle 400$

249 $\displaystyle 249$

359 $\displaystyle 359$

449 $\displaystyle 449$

Correct answer:

449 $\displaystyle 449$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

9+0=9 $\displaystyle 9+0=9$

4+0=4 $\displaystyle 4+0=4$

3+1=4 $\displaystyle 3+1=4$

$\frac{\begin{array}[b]{r}349\\ +\ 100\end{array}}{\ \ \ \space449}$ $\displaystyle \frac{\begin{array}[b]{r}349\\ +\ 100\end{array}}{\ \ \ \space449}$

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Example Question #1081 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}222\\ +\ 100\end{array}}{?}$ $\displaystyle \frac{\begin{array}[b]{r}222\\ +\ 100\end{array}}{?}$

Possible Answers:

232 $\displaystyle 232$

100 $\displaystyle 100$

322 $\displaystyle 322$

200 $\displaystyle 200$

300 $\displaystyle 300$

Correct answer:

322 $\displaystyle 322$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

2+0=2 $\displaystyle 2+0=2$

2+1=3 $\displaystyle 2+1=3$

$\frac{\begin{array}[b]{r}222\\ +\ 100\end{array}}{\ \ \ \space322}$ $\displaystyle \frac{\begin{array}[b]{r}222\\ +\ 100\end{array}}{\ \ \ \space322}$

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Example Question #1082 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}587\\ +\ 100\end{array}}{?}$ $\displaystyle \frac{\begin{array}[b]{r}587\\ +\ 100\end{array}}{?}$

Possible Answers:

500 $\displaystyle 500$

597 $\displaystyle 597$

587 $\displaystyle 587$

687 $\displaystyle 687$

600 $\displaystyle 600$

Correct answer:

687 $\displaystyle 687$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

7+0=7 $\displaystyle 7+0=7$

8+0=8 $\displaystyle 8+0=8$

5+1=6 $\displaystyle 5+1=6$

$\frac{\begin{array}[b]{r}587\\ +\ 100\end{array}}{\ \ \ \space687}$ $\displaystyle \frac{\begin{array}[b]{r}587\\ +\ 100\end{array}}{\ \ \ \space687}$

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Example Question #1083 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}642\\ +\ 100\end{array}}{?}$ $\displaystyle \frac{\begin{array}[b]{r}642\\ +\ 100\end{array}}{?}$

Possible Answers:

652 $\displaystyle 652$

500 $\displaystyle 500$

842 $\displaystyle 842$

742 $\displaystyle 742$

442 $\displaystyle 442$

Correct answer:

742 $\displaystyle 742$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

2+0=2 $\displaystyle 2+0=2$

4+0=4 $\displaystyle 4+0=4$

6+1= $\displaystyle 6+1=$ $\displaystyle 7$

$\frac{\begin{array}[b]{r}642\\ +\ 100\end{array}}{\ \ \ \space742}$ $\displaystyle \frac{\begin{array}[b]{r}642\\ +\ 100\end{array}}{\ \ \ \space742}$

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Example Question #1084 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}789\\ +\ 100\end{array}}{?}$ $\displaystyle \frac{\begin{array}[b]{r}789\\ +\ 100\end{array}}{?}$

Possible Answers:

689 $\displaystyle 689$

889 $\displaystyle 889$

989 $\displaystyle 989$

800 $\displaystyle 800$

799 $\displaystyle 799$

Correct answer:

889 $\displaystyle 889$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

9+0=9 $\displaystyle 9+0=9$

8+0=8 $\displaystyle 8+0=8$

7+1=8 $\displaystyle 7+1=8$

$\frac{\begin{array}[b]{r}789\\ +\ 100\end{array}}{\ \ \ \space889}$ $\displaystyle \frac{\begin{array}[b]{r}789\\ +\ 100\end{array}}{\ \ \ \space889}$

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Example Question #1085 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}867\\ +\ 100\end{array}}{?}$ $\displaystyle \frac{\begin{array}[b]{r}867\\ +\ 100\end{array}}{?}$

Possible Answers:

967 $\displaystyle 967$

900 $\displaystyle 900$

877 $\displaystyle 877$

767 $\displaystyle 767$

800 $\displaystyle 800$

Correct answer:

967 $\displaystyle 967$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

7+0=7 $\displaystyle 7+0=7$

6+0=6 $\displaystyle 6+0=6$

8+1=9 $\displaystyle 8+1=9$

$\frac{\begin{array}[b]{r}867\\ +\ 100\end{array}}{\ \ \ \space967}$ $\displaystyle \frac{\begin{array}[b]{r}867\\ +\ 100\end{array}}{\ \ \ \space967}$

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Example Question #1086 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}100\\ +\ 100\end{array}}{?}$ $\displaystyle \frac{\begin{array}[b]{r}100\\ +\ 100\end{array}}{?}$

Possible Answers:

300 $\displaystyle 300$

200 $\displaystyle 200$

110 $\displaystyle 110$

100 $\displaystyle 100$

$\displaystyle 0$

Correct answer:

200 $\displaystyle 200$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

0+0=0 $\displaystyle 0+0=0$

1+1=2 $\displaystyle 1+1=2$

$\frac{\begin{array}[b]{r}100\\ +\ 100\end{array}}{\ \ \ \space200}$ $\displaystyle \frac{\begin{array}[b]{r}100\\ +\ 100\end{array}}{\ \ \ \space200}$

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Example Question #1087 : Number & Operations In Base Ten

$\frac{\begin{array}[b]{r}175\\ +\ 100\end{array}}{?}$ $\displaystyle \frac{\begin{array}[b]{r}175\\ +\ 100\end{array}}{?}$

Possible Answers:

$\displaystyle 75$

375 $\displaystyle 375$

175 $\displaystyle 175$

185 $\displaystyle 185$

275 $\displaystyle 275$

Correct answer:

275 $\displaystyle 275$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

5+0=5 $\displaystyle 5+0=5$

7+0=7 $\displaystyle 7+0=7$

1+1=2 $\displaystyle 1+1=2$

$\frac{\begin{array}[b]{r}175\\ +\ 100\end{array}}{\ \ \ \space275}$ $\displaystyle \frac{\begin{array}[b]{r}175\\ +\ 100\end{array}}{\ \ \ \space275}$

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Example Question #1 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

$\frac{\begin{array}[b]{r}386\\ +\ 100\end{array}}{?}$ $\displaystyle \frac{\begin{array}[b]{r}386\\ +\ 100\end{array}}{?}$

Possible Answers:

396 $\displaystyle 396$

486 $\displaystyle 486$

400 $\displaystyle 400$

286 $\displaystyle 286$

586 $\displaystyle 586$

Correct answer:

486 $\displaystyle 486$

Explanation:

When adding any number by 100 $\displaystyle 100$ the only number that will change in your answer is the hundreds place.

6+0=6 $\displaystyle 6+0=6$

8+0=8 $\displaystyle 8+0=8$

3+1=4 $\displaystyle 3+1=4$

$\frac{\begin{array}[b]{r}386\\ +\ 100\end{array}}{\ \ \ \space486}$ $\displaystyle \frac{\begin{array}[b]{r}386\\ +\ 100\end{array}}{\ \ \ \space486}$

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Common Core: 2nd Grade Math : Mentally Add and Subtract 10 or 100 to a Given Number : CCSS.Math.Content.2.NBT.B.8

Study concepts, example questions & explanations for Common Core: 2nd Grade Math

All Common Core: 2nd Grade Math Resources

Example Questions

Example Question #1071 : Common Core Math: Grade 2

Example Question #131 : How To Add

Example Question #1081 : Number & Operations In Base Ten

Example Question #1082 : Number & Operations In Base Ten

Example Question #1083 : Number & Operations In Base Ten

Example Question #1084 : Number & Operations In Base Ten

Example Question #1085 : Number & Operations In Base Ten

Example Question #1086 : Number & Operations In Base Ten

Example Question #1087 : Number & Operations In Base Ten

Example Question #1 : Mentally Add And Subtract 10 Or 100 To A Given Number : Ccss.Math.Content.2.Nbt.B.8

All Common Core: 2nd Grade Math Resources

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