Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

Number and Operations in Base Ten

- Use place value understanding and properties of operations to add and subtract.

Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

Number and Operations in Base Ten

- Use place value understanding and properties of operations to add and subtract.

New Mexico DOE

Last updated:

2015-04-08 13:03:28

No resources have been tagged as aligned with this standard.

- This standard is part of: Use place value understanding and properties of operations to add and subtract.
- This standard is derived from: CCSS.Math.Content.1.NBT.C.5

Standards with the same topic and subject but for other grades

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

New Mexico DOE

Last updated:

2015-04-08 13:03:28

Add up to four two-digit numbers using strategies based on place value and properties of operations.

New Mexico DOE

Last updated:

2015-04-08 13:03:28

Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

New Mexico DOE

Last updated:

2015-04-08 13:03:28

Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.

New Mexico DOE

Last updated:

2015-04-08 13:03:28

Explain why addition and subtraction strategies work, using place value and the properties of operations.

New Mexico DOE

Last updated:

2015-04-08 13:03:28

Standards derived from the same national standard

North Carolina DOE

Last updated:

2015-06-23 09:57:13

Mentally add or subtract 10 to or from a given two-digit number. Explain the reasoning used.

North Dakota DOE

Last updated:

2017-05-04 19:59:08

Vermont DOE

Last updated:

2013-06-21 08:28:12

Rhode Island DOE

Last updated:

2013-06-20 15:53:13

North Dakota DOE

Last updated:

2015-04-08 13:03:28

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