Exploring Addition in Subtraction Problem Solutions

What is the primary goal of using addition in subtraction problems?

• To make subtraction easier

• To verify the correctness of subtraction results

• To learn addition

• To confuse the students

Tags

CCSS.1.OA.A.1

What is the result of 67 minus 25?

• 42

• 32

• 52

• 45

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

How do we rearrange a subtraction problem to check it with addition?

• Add the difference to the minuend

• Subtract the subtrahend from the difference

• Add the difference to the subtrahend

• Subtract the minuend from the difference

Tags

CCSS.2.OA.A.1

What was the addition problem used to verify 49 minus 34?

• 15 + 34

• 34 + 15

• 49 + 34

• 34 + 49

Tags

CCSS.2.NBT.B.5

What is the correct result of adding 15 and 34?

• 48

• 50

• 45

• 49

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Can this method of verification be used with three-digit numbers?

• No, it's only for two-digit numbers

• No, it's not recommended

• Yes, without exceptions

• Yes, but with some limitations

Tags

CCSS.2.NBT.B.7

What is the result of 725 minus 462?

• 263

• 365

• 253

• 273

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

How do we handle regrouping in subtraction when using this verification method?

• Regrouping is not possible with this method

• Regrouping is automatically handled

• Adjust the addition problem to account for regrouping

• Ignore regrouping

Tags

CCSS.2.NBT.B.7

What is the addition problem used to verify the subtraction of 725 and 462?

• 462 + 263

• 725 + 263

• 725 + 462

• 263 + 462

What confirms the correctness of the subtraction problem according to the method described?

• The addition result matches the subtrahend

• The addition result is less than the minuend

• The addition result is greater than the minuend

• The addition result matches the minuend

Tags

CCSS.7.NS.A.1C