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ESSENTIAL QUESTION

How can place value help us add and subtract efficiently?

Common Core Standards 2017-2018 Common Assessments Print Unit 6
Primary - Math - Grade 1 - Unit 6
Addition & Subtraction with Regrouping.
Students will explore addition & subtraction with regrouping.
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In this unit, students will explore two digit addition & subtraction with regrouping.

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1.NBT.4:

Add within 100, including adding a two-digit number and a one-digit number, add a two-digit number and a multiple of 10, 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 and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.

 1.NBT.6:

Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), 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 and explain the reasoning used.

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1.NBT.4 I can add a 2-digit number and a 1-digit number.


1.NBT.4 I can add a 2-digit number and a multiple of ten.

 

1.NBT.4 I can explain what strategy I used to solve my problem.

 

1.NBT.4 I can determine when to regroup in an addition problem.

 

1.NBT.4 I can add two 2-digit numbers without regrouping.

 

1.NBT.4 I can add two 2-digit numbers with regrouping

1.NBT.6 I can subtract a multiple of 10 from another multiple of 10. (10-90)

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COMMON ASSESSMENTS Show All | Hide All | Top
CRITICAL VOCABULARY Show All | Hide All | Top

add

subtract

regroup

tens

ones

sum

difference

digit

 

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