enVision 2.0: Topic 6 Fluently Subtract Within 100

Front

What is subtraction?

Back

Subtraction is taking away a number from another number. It shows how many are left.

Front

What does it mean to 'borrow' in a library?

Back

To borrow means to take something from someone (like a book) with the promise to return it later.

Front

If you have 50 books and 5 kids borrow 12 books, how many books are left?

Back

38 books.

Front

What is the equation to find out how many toys Ms. Ostrega has after giving some away and getting more?

Back

88 - 29 = 59, then 59 + 5 = 64.

Front

How do you find out how many toys Joseph and Leo have after a robber steals some?

Back

34 + 46 = 80, then 80 - 20 = 60.

Front

If Isla has 57 apples and eats 9, how many apples does she have left?

Back

48 apples.

Front

What is the equation to find out how many toys Aubree has after giving some to Lilly?

Back

97 - 29 = 68.

Front

What is the term for the result of a subtraction problem?

Back

The result is called the 'difference'.

Front

What does 'left' mean in math problems?

Back

'Left' refers to what remains after something is taken away.

Front

How can you check your subtraction answer?

Back

You can add the difference to the number you subtracted to see if you get the original number.