Mastering 3-Digit Addition with Regrouping

What is a digit?

• A single whole number between 0 and 9

• A method of regrouping in addition

• A symbol used in algebra

• A type of mathematical operation

How many digits does the number 356 have?

• 2

• 3

• 4

• 5

Where do we start the addition process in three-digit addition?

• In the hundreds place

• At the decimal point

• In the tens place

• In the ones place

What is the sum of the digits in the ones place for 229 and 146?

• 15

• 17

• 14

• 16

What does regrouping involve in three-digit addition?

• Moving a digit from the tens to the ones place

• Adding two numbers without carrying over

• Subtracting one number from another

• Moving a digit from the ones to the tens place

Which strategy is used to find the sum in the tens place?

• Subtraction

• Regrouping

• Counting on

• Making ten

What is the sum of 229 and 146?

• 375

• 365

• 395

• 385