Adding with regrouping

Front

What is regrouping in addition?

Back

Regrouping in addition is a method used to simplify the addition of numbers by carrying over values from one column to the next when the sum exceeds the base value (e.g., 10 in base 10).

Front

How do you add two-digit numbers with regrouping?

Back

To add two-digit numbers with regrouping, start by adding the digits in the ones place. If the sum is 10 or more, carry over the extra value to the tens place and then add the digits in the tens place.

Front

What is the sum of 47 and 36?

Back

The sum of 47 and 36 is 83. (4+3=7 in the tens place, 7+6=13 in the ones place, carry over 1 to the tens place, resulting in 8 in the tens place and 3 in the ones place.)

Front

Explain the process of carrying over in addition.

Back

Carrying over in addition involves moving a value from one column to the next when the sum of that column exceeds the base value. For example, if the sum of the ones place is 12, you write down 2 and carry over 1 to the tens place.

Front

What is the importance of place value in addition?

Back

Place value is crucial in addition as it determines the value of each digit based on its position. It helps in correctly aligning numbers and performing operations like regrouping.

Front

How do you check your addition for accuracy?

Back

To check your addition, you can use the inverse operation (subtraction) to verify that the sum of the two original numbers equals the result obtained.

Front

What is the result of adding 29 and 44?

Back

The result of adding 29 and 44 is 73. (2+4=6 in the tens place, 9+4=13 in the ones place, carry over 1 to the tens place, resulting in 7 in the tens place and 3 in the ones place.)

Front

What happens when the sum of the ones place is greater than 9?

Back

When the sum of the ones place is greater than 9, you must regroup by carrying over the extra value to the next column (the tens place).

Front

Define the term 'sum' in mathematics.

Back

In mathematics, the term 'sum' refers to the result of adding two or more numbers together.

Front

What is the sum of 53 and 27?

Back

The sum of 53 and 27 is 80. (5+2=7 in the tens place, 3+7=10 in the ones place, carry over 1 to the tens place, resulting in 8 in the tens place and 0 in the ones place.)