Exploring Subtraction Strategies for Elementary Math

The video tutorial covers various subtraction strategies, including using a number line, a hundreds chart, and the tens and ones method. It provides examples and explains how to solve subtraction problems using these strategies. The tutorial also includes a word problem and demonstrates the standard algorithm for subtraction. The video concludes with a summary of the strategies discussed.

If Cody starts with 10 balloons and 3 pop, how many does he have left?

• 13 balloons

• 10 balloons

• 3 balloons

• 7 balloons

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What tool can help visualize subtraction by counting backwards?

• Number line

• Hundreds chart

• Multiplication table

• Alphabet chart

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When subtracting 53 from 32 using a number line, what is the final number you land on?

• 21

• 23

• 32

• 85

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Using a hundreds chart, what is the result of 68 minus 34?

• 44

• 30

• 34

• 32

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CCSS.2.MD.B.6

When breaking apart 45 into tens and ones, how many ones are there?

• 5

• 4

• 10

• 12

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After subtracting 12 from 45 by removing tens and ones, what is the result?

• 43

• 33

• 32

• 23

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What is a helpful strategy when subtracting two-digit numbers?

• Breaking into tens and ones

• Skipping the ones place

• Using a calculator

• Guessing

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Kelly had $37 and spent $16. How much does she have left?

• $19

• $20

• $23

• $21

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In the standard algorithm, what is the first step when subtracting 57 from 25?

• Multiply the tens

• Subtract the ones

• Subtract the tens

• Add the ones

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What is the result of subtracting 25 from 57 using the standard algorithm?

• 33

• 42

• 32

• 22

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