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How do I round 24,972 to the leading digit?. Midpoint. 24,972. 30,000. 20,000. or. l l l l l l l l l l l. In this lesson you will learn how to round numbers to the leading digit by using a number line. Leading Digit - The digit at the beginning of a number. For example: 6 87
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How do I round 24,972 to the leading digit? Midpoint 24,972 30,000 20,000 or l lllllllll l
In this lesson you will learn how to round numbers to the leading digit by using a number line.
Leading Digit - The digit at the beginning of a number. For example: 687 5,924 832,605
Rounding - To find a number that is close to a given number. Morgan Bakery Pizza Ashley l l l l l l l l l l l
Reading a Number Line 11 12 13 14 15 16 17 18 19 110 120 130 140 150 160 170 180 190 1100 1200 1300 1400 1500 1600 1700 1800 1900 l llllllll l llllllll l llllllll 1000 100 10 20 200 2000
Midpoint 700 750 800 Benchmark Numbers l l l l l l l l l l l 783
Thinking that the increments on a number line always signify counting by ones. 310 320 330 340 350 360 370 380 390 l llllllll 300 400
Misapplying the concept of “rounding down”. For example: 4,392 = 3,392 4,392 = 4,000
How can I use benchmark numbers and midpoints to help me round? 5500 5000 6000 Numbers less than the midpoint round down. Numbers the same as or greater than the midpoint round up. l l l l l l l l l l l
5500 5000 6000 5500 - 5999 5001 - 5499 5500 5000 6000 l l l l l l l l l l l
Round 342,789 400,000 300,000 Midpoint 350,000 Benchmark Numbers l l l l l l l l l l l
Round 28,012 l l l l l l l l l l l 30,000 20,000 Midpoint 25,000 Benchmark Numbers
Round 33,786 to the nearest ten thousand. 30,000 All of the digits behind the 3 turn to 0. 30,000 is the closest benchmark number.
Round 752,083 to the nearest hundred thousand. 800,000 The 7 raises to an 8 and all of the other digits turn to 0. 800,000 is the closest benchmark number.
In this lesson you have learned how to round numbers to the leading digit by using a number line.
In your math journal, define what a benchmark number represents. Give examples.
Draw a curved number line. Add the benchmark numbers and the midpoint for 49,621. • Round 49,621 to the nearest ten thousand.