PPT-Rounding to the Nearest Ten & Hundred

MAFS3NBT11 Lesson Opening Write the correct number under each tick mark on the number lines below 83 66 Lesson Opening Write the correct number under each tick mark on the number lines below. 615. 2,438. 75, 811. Round to the nearest thousand.. 3, 370. 197, 642. Arrange the following numbers in order, beginning with the smallest. .. 504,054. . 4,450. 505,045 . 44,500. Write each number in expanded form.. Intro . to Algebra. Why round?. On your calculator, take 132 ÷ 789. The answer is .16730038. Why round?. But we don’t want to write all that. . Most of it is so small that it doesn’t even have an effect on the number.. . Whole. . Numbers. What is rounding? Rounding means changing a given number to the nearest ten, hundred, thousand, and so on.. When rounding a number, you first need to ask: . what are you rounding it to?. In which place is the 4 in. each of the following:. 140,399. 48,210. 450. 129,394. Write 2 equivalent. fractions for each of the. following:. Rounding Decimal Numbers. Estimating and Approximating Sums and Differences. to the nearest 10. Next. Rounding numbers means to. get close to the exact number.. It’s used when we estimate.. Next. Rounding to the nearest 10. 20. . 21 22 23 24 . 25 26 27 28 29 . line. Lesson 2.14. Application Problem. Students model the following on the place value chart:. 10 tens. 10 hundreds. 13 tens. 13 hundreds. 13 tens and 8 ones. 13 hundreds 8 tens 7 ones . Application Problem. We do not always need to know the exact value of a number.. For example,. There are 1432 . students at East-park School. .. There . is about fourteen hundred students . at East-park School. .. Example. Remember:. If a number is 4 or lower, round down. If a number is 5 or higher round up. Examples. Round 29 to the nearest ten. Underline the 2 because it is in the tens place. Put a box around the 9, the 9 is the number that you look at to figure out the rule. Created by: Libby Maccani. Educational Concern. BIG IDEA: . Estimation: Numbers can be approximated by numbers that are close. Numerical calculations can be approximated by replacing numbers with other numbers that are close and easy to compute with mentally.. 5.NBT.4. Remember This:. “Look . right. next door-if it’s 5 or . more. (5,6,7,8 or 9) . raise (increase by one). the score. . If it’s 4 or . less. (4,3,2,1 or 0) let it rest.. Rounding Decimals to the Thousandths. LG: Demonstrate the ability to round numbers to the nearest ten. th. , hundred. th. , and thousand. th. Kid friendly: Show that you can round numbers to tenths, hundredths, and thousandths. Definitions. When rounding decimals it is first necessary to . identify . the place value you are rounding to. . The . digit that follows will tell you whether you should round up or leave the digit the same.. If . Mission. . You are lost in a jungle. . You’ve been walking around for days. . The only way to get out of the jungle is . to correctly answer the questions about rounding whole numbers. . . Are You Ready?. This resource provides animated demonstrations of the mathematical method.. Check animations and delete slides not needed for your class.. There are 400 people in my village.. Last year I earnt £23,000..