How do I find the benchmark numbers for 783?

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Benchmark Numbers

In this lesson you will learn how to locate benchmark

numbers by using a number line.

Let’s ReviewLet’s Review

Rounding - To find a number that is close to a given number.

l l l l l l l l l l lBakery

Morgan

Ashley Pizza

Let’s ReviewLet’s Review

Reading a Number Line

l l l l l l l l l 10 20 11 12 13 14 15 16 17 18

19 l l l l l l l l l 100 200 110 120 130 140 150 160 170 180

190

l l l l l l l l l 1000 2000 1100 1200 1300 1400 1500 1600 1700 1800 1900

Let’s ReviewA Common Mistake

Thinking that the increments on a number line always signify counting by

ones.

l l l l l l l l l 300 400 310 320 330 340 350 360 370 380 390

Let’s ReviewCore Lesson

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What are the benchmark numbers for

783?

l l l l l l l l l l l

783

700 800

780 790

783

783

Let’s ReviewCore Lesson

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What are the benchmark numbers for

2,356?

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2,356

2000 3000

2300 2400

2,356

2,356

Let’s ReviewCore Lesson

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What are the benchmark numbers for

985?

l l l l l l l l l l l985

900 1000

980 990

985

985

In this lesson you have learned how to locate benchmark

numbers by using a number line.

Let’s ReviewGuided Practice

Draw a number line. What are the benchmark numbers for 4,721 in hundreds?Where would you place 4,721 on the number line?

Let’s ReviewExtension Activities

Draw 3 number lines.

Find the benchmark numbers for 3,827 in thousands, hundreds, and tens.

Place 3,827 on each of the number lines.

Let’s ReviewQuick Quiz

What are the benchmark numbers in thousands for 3,874?

Let’s ReviewQuick Quiz

What are the benchmark numbers in hundreds for 7,923?