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Rounding Decimals

Rounding Decimals. 5.NBT.A.4. Rounding Decimals. Round to the nearest ten. 153. 150. Here is the whole number 153. Let’s round to the nearest ten. Which digit is in the tens place?. How many tens are in this number?. 15. 5. The digit to the right is a 3. Should we round up?.

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Rounding Decimals

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  1. Rounding Decimals 5.NBT.A.4

  2. Rounding Decimals Round to the nearest ten. 153 150 Here is the whole number 153. Let’s round to the nearest ten. Which digit is in the tens place? How many tens are in this number? 15 5 The digit to the right is a 3. Should we round up? No, we round up only when this number is 5 or more. So, 153 is nearest to 15 tens … … which is 150. Today, we will learn about how to round decimals. First, let’s review how to round whole numbers.

  3. Rounding Decimals Round to the nearest hundred. 2,8 7 1 2,9 0 0 Here is 2,871. Let’s round to the nearest hundred. Which digit is in the hundreds place? How many hundreds are in this number? 28 8 The digit to the right is a 7. Should we round up? Yes, we round up when this number is 5 or more. So, the nearest hundred is 29 hundreds … … which is 2,900.

  4. Rounding Decimals Round to the nearest thousand. 3 9,5 1 2 4 0,0 0 0 Here is 39,512. Let’s round to the nearest thousand. Which digit is in the thousands place? How many thousands are in this number? 39 9 The digit to the right is a 5. Should we round up? Yes, we round up when this number is 5 or more. So, the nearest thousand is 40 thousands … … which is 40,000.

  5. Rounding Decimals Round to the nearest tenth. 0.6 1 0.6 Here is 0.61. Let’s round to the nearest tenth. Which digit is in the tenths place? How many tenths are in this number? 6 6 The digit to the right is a 1. Should we round up? No, we round up only when this number is 5 or more. So, 0.61 is nearest to 6 tenths. The answer is 0.6. Now, let’s use the same strategy to round decimals.

  6. Rounding Decimals Round to the nearest tenth. 5.8 7 4 5.9 Here is 5.874. Let’s round to the nearest tenth. Which digit is in the tenths place? How many tenths are in this number? 58 8 The digit to the right is a 7. Should we round up? Yes, we round up when this number is 5 or more. So, 5.874 is nearest to 59 tenths … … which is 5.9.

  7. Rounding Decimals Round to the nearest tenth. 1.2 4 3 1.2 Here is 1.243. Let’s round to the nearest tenth. Which digit is in the tenths place? How many tenths are in this number? 12 2 The digit to the right is a 4. Should we round up? No, we round up only when this number is 5 or more. So, 1.243 rounds to 12 tenths … … which is 1.2.

  8. Rounding Decimals Round to the nearest tenth. 3 6.2 7 4 3 6.3 Here is 36.274. Let’s round to the nearest tenth. Which digit is in the tenths place? How many tenths are in this number? 362 2 The digit to the right is a 7. Should we round up? Yes, we round up when this number is 5 or more. So, 36.274 rounds to 363 tenths … … which is 36.3.

  9. Rounding Decimals Round to the nearest hundredth. 0.6 1 7 0.6 2 The digit to the right is a 7. Should we round up? Here is 0.617. This time, let’s round to the nearest hundredth. Which digit is in the hundredths place? How many hundredths are in this number? 61 1 Yes, we round up when this number is 5 or more. So, 0.617 is nearest to 62 hundredths … … which is 0.62.

  10. Rounding Decimals Round to the nearest hundredth. 4.3 8 1 9 4.3 8 Here is 4.3819. Let’s round to the nearest hundredth. Which digit is in the hundredths place? How many hundredths are in this number? 438 8 The digit to the right is a 1. Should we round up? No, we round up only when this number is 5 or more. So, 4.3819 rounds to 438 hundredths … … which is 4.38.

  11. Rounding Decimals Round to the nearest hundredth. 0.2 4 3 7 0.2 4 Here is 0.2437. Let’s round to the nearest hundredth. Which digit is in the hundredths place? How many hundredths are in this number? 24 4 The digit to the right is a 3. Should we round up? No, we round up only when this number is 5 or more. So, 0.2437 rounds to 24 hundredths … … which is 0.24.

  12. Rounding Decimals Round to the nearest thousandth. 0.0 0 7 2 0.0 0 7 Here is 0.0072. Let’s round to the nearest thousandth. Which digit is in the thousandths place? How many thousandths are in this number? 7 7 The digit to the right is a 2. Should we round up? No, we round up only when this number is 5 or more. So, 0.0072 is nearest to 7 thousandths … … which is 0.007.

  13. Rounding Decimals Round to the nearest thousandth. 0.4 6 1 8 0.4 6 2 Here is 0.4618. Let’s round to the nearest thousandth. Which digit is in the thousandths place? How many thousandths are in this number? 461 1 The digit to the right is an 8. Should we round up? Yes, we round up when this number is 5 or more. So, 0.4618 is nearest to 462 thousandths … … which is 0.462.

  14. Rounding Decimals Lightning Round

  15. Rounding Decimals Round to the nearest tenth. 1.3 8 1.4

  16. Rounding Decimals Round to the nearest tenth. 0.5 1 6 0.5

  17. Rounding Decimals Round to the nearest tenth. 3.8 9 1 3.9

  18. Rounding Decimals Round to the nearest hundredth. 0.0 7 2 0.0 7

  19. Rounding Decimals Round to the nearest hundredth. 0.1 3 8 0.1 4

  20. Rounding Decimals Round to the nearest hundredth. 5.2 6 5 5.2 7

  21. Rounding Decimals Closing Question

  22. Rounding Decimals Round to the nearest hundredth. 3.5 1 5 3.5 2

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