Math 12.2

Presentation

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Mathematics

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2nd Grade

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Practice Problem

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Medium

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CCSS

2.OA.A.1, 1.NBT.B.2B, 2.NBT.B.7

Standards-aligned

Darasani Heath

Used 2+ times

FREE Resource

4 Slides • 7 Questions

Math 12.2

Second Grade

Multiple Choice

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Steve has 15 baseball cards. He gives 7 baseball cards to Evan. How many baseball cards does Steve have now?

Today we will work regrouping for subtraction

Everyone needs to draw a place value chart with ones and tens
We will use longs to represent tens and cubes to represent ones

Let's try one together: Ms. Heath has 18 pencils, 9 of her students need one. How many pencils does she have left?

Make a place value chart and label the ones and tens
Use longs to represent tens and cubes to represent ones

Multiple Choice

Elena has 42 pennies in a jar.She gives 14 pennies to Mark. How many pennies does Mark have left?

A. How can you show 42 on the place value chart

5 longs and 2 cubes

4 longs and 2 cubes

Multiple Choice

Elena has 42 pennies in a jar.She gives 14 pennies to Mark. How many pennies does Mark have left?

B. Are there enough ones to subtract 4 ones?

yes

Multiple Choice

How can you regroup 1 ten as 10 ones?

I can add ten cubes.

I can take 1 long from the tens place and make it 10 cubes and put them in the ones place.

Multiple Choice

C. Subtract 4 ones from 12 ones. How many ones are left?

Multiple Choice

Subtract 1 ten from 3 tens. How many tens are left?

Multiple Choice

How many pennies does Elena have left?

Let's try some more

Ethan has 28 marbles . He gives Zephaniah 9 marbles. How many marbles does Ethan have left?

Math 12.2

Second Grade

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