Adding and Subtracting with regrouping

Front

What is regrouping in addition?

Back

Regrouping in addition is when you combine numbers that are greater than 10 and carry over to the next place value. For example, in 27 + 15, you add 7 and 5 to get 12, so you write down 2 and carry over 1 to the tens place.

Front

What is regrouping in subtraction?

Back

Regrouping in subtraction is when you borrow from the next place value to subtract a larger digit from a smaller digit. For example, in 42 - 15, you borrow 1 from the tens place to make the 2 into 12, allowing you to subtract 5 from 12.

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest specified place value, such as the nearest ten or hundred, to make it easier to work with.

Front

Round 882 to the nearest 100.

Back

900

Front

Round 219 to the nearest 10.

Back

220

Front

What is the sum of 268 and 333?

Back

601 Stamps

Front

What is 474 - 275?

Back

199

Front

What is the first step in adding two numbers with regrouping?

Back

The first step is to add the digits in the ones place. If the sum is 10 or more, regroup by carrying over to the tens place.

Front

What is the first step in subtracting two numbers with regrouping?

Back

The first step is to look at the digits in the ones place. If the top digit is smaller than the bottom digit, you need to borrow from the next place value.

Front

What is the place value of the digit 5 in the number 345?

Back

The place value of the digit 5 in 345 is 'tens'.