Topic 2 Fluently Add and Subtract Multi-digit Whole Numbers

Front

What is the process of adding multi-digit whole numbers called?

Back

Addition

Front

What is the process of subtracting multi-digit whole numbers called?

Back

Subtraction

Front

What is the sum of 423,156 and 571,607?

Back

994,763

Front

What is the sum of 23,100 and 74,900?

Back

98,000

Front

What is the sum of 4,505 and 3,515?

Back

8,020

Front

What is the result of subtracting 999 from 6,794?

Back

5,795

Front

What is the result of subtracting 357 from 592?

Back

235

Front

What is the importance of aligning numbers by place value when adding or subtracting?

Back

It ensures accurate calculations by keeping digits in the correct columns.

Front

What is a common strategy for estimating the sum of two multi-digit numbers?

Back

Rounding each number to the nearest ten, hundred, or thousand before adding.

Front

What is a common strategy for estimating the difference between two multi-digit numbers?

Back

Rounding each number to the nearest ten, hundred, or thousand before subtracting.