Benchmark Numbers and Number Lines

The video tutorial explains how to find benchmark numbers using a number line. It covers the concept of rounding and demonstrates how to identify benchmark numbers for different numbers, such as 783, 2,356, and 985, by focusing on different place values like hundreds, tens, and thousands. The tutorial also highlights common mistakes students make when interpreting increments on a number line and provides examples of counting by various increments.

What are the benchmark numbers for 783 when considering the hundreds?

• 750 and 850

• 700 and 800

• 700 and 900

• 780 and 790

Which of the following is NOT a way to represent a number line?

• Counting by tens

• Counting by ones

• Counting by hundreds

• Counting by thousands

What is a common mistake students make when reading number lines?

• Assuming increments always count by ones

• Assuming increments always count by tens

• Assuming increments always count by thousands

• Assuming increments always count by hundreds

How do you count on a number line with benchmark numbers of 1,000 and 2,000?

• By thousands

• By tens

• By ones

• By hundreds

If you focus on the tens in 783, what are the benchmark numbers?

• 780 and 790

• 790 and 800

• 700 and 800

• 770 and 780

What are the benchmark numbers for 2,356 when considering the thousands?

• 2,350 and 2,360

• 2,000 and 3,000

• 2,100 and 2,200

• 2,300 and 2,400

When focusing on the hundreds in 2,356, what are the benchmark numbers?

• 2,100 and 2,200

• 2,350 and 2,360

• 2,300 and 2,400

• 2,000 and 3,000

For the number 985, what are the benchmark numbers when considering the hundreds?

• 900 and 1,000

• 980 and 990

• 970 and 980

• 950 and 1,050

If you focus on the tens in 985, what are the benchmark numbers?

• 970 and 980

• 980 and 990

• 960 and 970

• 950 and 960

What is the purpose of using a number line in this lesson?

• To find exact numbers

• To locate benchmark numbers

• To perform addition

• To perform subtraction