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Subtraction Detective Case Files

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Subtraction Detective Case Files

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About this activity

A math mystery of subtraction cases

Created by

Hidden Author
Hidden Author
Lebanon

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Subtraction Detective Case Files
 

Subtraction Detective Case FilesOnline version

A math mystery of subtraction cases

by Hidden Author
1

I am the answer obtained after subtracting one number from another. What am I?

Hints

It is the result of subtraction.

It's not the starting numbers.

Think of what you get after taking away.

2

I am the number that another number is taken away from. What am I?

Hints

Keeps the total before subtracting.

Opposite of the subtracted part.

It's the starting amount in a subtraction problem.

3

I am the number being taken away. What am I?

Hints

Often called the part that is subtracted.

The smaller part in the subtraction.

What is removed from the minuend?

4

I am the process used when a digit does not have enough units to subtract the digit below it. What am I?

Hints

Helps when you can't subtract directly.

Move a value from the next place to the current one.

Also called borrowing in some places.

5

I show a number by separating the value of each digit. For example: 345 = 300 + 40 + 5 What am I?

Hints

Helps visualize digits separately.

Each digit shows its value in its place.

Split a number into place values.

6

6,789 − 4,321 What is the difference?

Hints

The result is the remaining value.

Write without commas if needed.

Subtract each place value from right to left.

7

7,500 − 2,368 What is the difference?

Hints

Result is the remaining amount after subtraction.

Subtract from right to left.

Line up the digits by place value.

8

6,000 − 2,000 What number remains?

Hints

If both numbers are multiples of 1,000, the remainder follows.

Subtract the thousands first.

9

2,345 − 1,234 What is the difference?

Hints

The digits will reflect the remaining amount.

Watch for borrows if needed.

Subtract across each place value.

10

4,105 − 2,987 What is the difference?

Hints

The difference is the remaining value.

Borrow when necessary for subtraction.

Align by place value.

 
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