Mastering Multidigit Addition Techniques

What is a multi-digit number?

• A number that cannot be divided

• A number with only one digit

• A number with more than one digit

• A number less than ten

In the number 215, what digit is in the hundreds place?

• 5

• 0

• 1

• 2

What is the first step in adding two multi-digit numbers?

• Stack the numbers and align their places

• Write a plus sign

• Add the digits in the tens place

• Draw a line below the numbers

When adding 215 and 32, what is the sum of the digits in the ones place?

• 5

• 9

• 2

• 7

What do you do when the sum of digits in a column is a two-digit number?

• Subtract the extra digit

• Ignore the extra digit

• Write both digits in the answer

• Carry the extra digit to the next column

In the example 1850 + 354, what is the sum of the digits in the tens place?

• 4

• 9

• 10

• 5

When adding 145, 809, and 77, what is the sum of the digits in the hundreds place?

• 7

• 10

• 8

• 9

What is the sum of 145, 809, and 77?

• 1051

• 1031

• 1021

• 1041

When estimating, is 34 closer to 30 or 40?

• 30

• 40

• 35

• 50

What is the estimated sum of 34 and 59?

• 80

• 90

• 100

• 70