Understanding Addition and Carrying

Why do we carry over numbers when their sum exceeds ten?

• To confuse the students

• Because there is no room in the current place value

• To make the numbers look nicer

• Because it is a rule in mathematics

In the problem 284 + 136, what is the sum of the digits in the tens place after carrying?

• 13

• 12

• 11

• 10

What is the result of adding 327 and 145?

• 462

• 472

• 492

• 482

How can you verify your answer after solving an addition problem?

• By multiplying the sum by two

• By dividing the sum by one of the addends

• By subtracting the sum from one of the addends

• By adding the numbers again

What is the sum of 42,516 and 85,321?

• 127,837

• 127,847

• 127,857

• 127,867