Mastering Double-Digit Subtraction Techniques

This video tutorial covers the basics of subtraction, focusing on double digit subtraction. It begins with a simple explanation of subtraction as taking numbers away, using hats as an example. The concept of 'difference' is introduced as the result of a subtraction problem. The video then progresses to double digit subtraction, demonstrating how to break down problems into smaller parts. It introduces the concept of regrouping, a technique used when the bottom number is larger than the top number in a column. The tutorial concludes with a review and practice session, reinforcing the learned concepts.

What is subtraction essentially about?

• Dividing numbers

• Multiplying numbers

• Taking numbers away

• Adding numbers together

What is the 'difference' in the context of subtraction?

• The result of subtracting one number from another

• The product of two numbers

• The quotient of two numbers

• The sum of two numbers

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CCSS.1.OA.A.1

How many blueberries were left after eating 54 out of 66?

• 8 blueberries

• 12 blueberries

• 10 blueberries

• 14 blueberries

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CCSS.2.NBT.B.7

What is the purpose of covering the tens column when subtracting the ones?

• To ignore the problem

• To add more numbers

• To make the problem harder

• To simplify the problem

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CCSS.2.NBT.B.7

What does regrouping involve in subtraction?

• Adding a number to the tens column

• Dividing the ones column

• Borrowing one from the tens column

• Multiplying the tens column

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CCSS.5.NBT.B.7

What happens when the bottom digit is larger than the top digit in subtraction?

• You multiply the numbers

• You regroup

• You ignore the numbers

• You add the numbers

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CCSS.2.NBT.B.6

What was the final step in the subtraction problem 22 minus 17?

• Subtracting the ones

• Regrouping the tens

• Adding the ones

• Subtracting the tens

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the difference when subtracting 43 minus 25?

• 20

• 18

• 17

• 19

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

After regrouping, what does the tens column become in the example given?

• It remains unchanged

• It becomes zero

• It increases by one

• It decreases by one

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Why is teaching Mummy about subtraction important in the video?

• To make Mummy happy

• To conclude the video

• To review the concept

• To introduce a new topic

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CCSS.2.OA.A.1