Locating Benchmark Numbers Using a Number Line

The video tutorial explains how to locate benchmark numbers using a number line. It begins with an introduction to benchmark numbers and their importance in rounding. The tutorial then covers how to read and interpret number lines, emphasizing that increments can vary. Examples are provided for numbers 783, 2356, and 985, demonstrating how to identify benchmark numbers by focusing on different place values and counting by appropriate increments.

What is the purpose of using a number line when rounding numbers?

• To locate the closest benchmark number

• To subtract numbers easily

• To find the exact value of a number

• To add numbers quickly

How can number lines be represented?

• Only in increments of one

• In various ways with different increments

• Only in increments of ten

• Only in increments of five

What are the benchmark numbers for 783 when focusing on the hundreds?

• 780 and 790

• 750 and 800

• 700 and 750

• 700 and 800

When focusing on the tens, what are the benchmark numbers for 783?

• 700 and 800

• 780 and 790

• 770 and 780

• 790 and 800

What are the benchmark numbers for 2356 when focusing on the thousands?

• 2000 and 2500

• 2000 and 3000

• 2300 and 2400

• 2000 and 3000

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

• 900 and 1000

• 980 and 990

• 950 and 1000

• 900 and 950

When focusing on the tens, what are the benchmark numbers for 985?

• 990 and 1000

• 900 and 1000

• 980 and 990

• 970 and 980