rounding off decimals. 0 10 20 30405060908070 100 rounding off decimals round off 37 to the nearest...

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Rounding Off Decimals

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Page 1: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

Rounding Off Decimals

Page 2: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

0 10 20 30 40 50 60 908070 100

Rounding Off Decimals

Round off 37 to the nearest ten

37 is between 30 and 40

Page 3: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

Round off 37 to the nearest ten

3031 32 33 34 35 36 393837

4037

37 is nearer to 40 than to 3037 is when rounded off to the nearest ten

40

Rounding Off Decimals

Page 4: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

Round off 750 to the nearest hundred

750 is between 700 and 800

500 900800700600 1000

Rounding Off Decimals

Page 5: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

Round off 750 to the nearest hundred

750 is halfway between 700 and 800

700 780760740720 800

halfway

750

750 is when rounded off to the nearest hundred

800

Rounding Off Decimals

Page 6: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2

Round off 1.4 to the nearest whole number

1.4 is nearer to 1 than to 2

1.4 is when rounded off to the nearest whole number

1

Rounding Off Decimals

Page 7: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2

Round off 1.7 to the nearest whole number

1.7 is nearer to 2 than to 1

1.7 is when rounded off to the nearest whole number

2

Rounding Off Decimals

Page 8: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2

Round off 1.764 to the nearest whole number

1.764 is nearer to 2 than to 1

1.764 is when rounded off to the nearest whole number

2

1.764

Rounding Off Decimals

Page 9: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

4.5 4.51 4.52 4.53 4.54 4.55 4.56 4.57 4.58 4.59 4.6

Round off 4.56 to the nearest tenth

Where are the tenths?4.56 is nearer to 4.6 than to 4.54.56 is when rounded off to the nearest tenth

4.6

Rounding Off Decimals

Page 10: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

4.5 4.51 4.52 4.53 4.54 4.55 4.56 4.57 4.58 4.59 4.6

Round off 4.52 to the nearest tenth

4.52 is nearer to 4.5 than to 4.64.52 is when rounded off to the nearest tenth

4.5

Rounding Off Decimals

Page 11: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

4.5 4.51 4.52 4.53 4.54 4.55 4.56 4.57 4.58 4.59 4.6

Round off 4.55 to the nearest tenth

4.55 is halfway between 4.5 and 4.64.55 is when rounded off to the nearest tenth

4.6

Rounding off to the nearest tenth is the same as rounding off to 1 decimal place.

Rounding Off Decimals

Page 12: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

4.56 4.6

4.72 4.7

4.85 4.9

When rounding off to 1 decimal place, consider the digit in the hundredths place only.

If the digit is equal to 5 or more than 5, add 1 to the digit in the tenths place.

If the digit is less than 5, retain the digit in the tenths place.

Rounding Off Decimals

Page 13: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

4.51 4.511 4.512 4.513 4.514 4.5154.516

4.517 4.518 4.519 4.52

Round off 4.518 to the nearest hundredth

4.518 is nearer to 4.52 than to 4.514.518 is when rounded off to the nearest hundredth

4.52

Where are the hundredths?

Rounding Off Decimals

Page 14: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

4.51 4.511 4.512 4.513 4.514 4.5154.516

4.517 4.518 4.519 4.52

Round off 4.514 to the nearest hundredth

4.514 is nearer to 4.51 than to 4.524.514 is when rounded off to the nearest hundredth

4.51

Rounding Off Decimals

Page 15: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

4.51 4.511 4.512 4.513 4.514 4.5154.516

4.517 4.518 4.519 4.52

Round off 4.515 to the nearest hundredth

4.515 is halfway between 4.51 and 4.524.515 is when rounded off to the nearest hundredth

4.52

Rounding off to the nearest hundredth is the same as rounding off to 2 decimal places.

Rounding Off Decimals

Page 16: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

4.528 4.53

4.564 4.56

4.515 4.52

When rounding to 2 decimal places, consider the digit in the thousandths place only.

If the digit is equal to 5 or more than 5, add 1 to the digit in the hundredths place.

If the digit is less than 5, retain the digit in the hundredths place.

Rounding Off Decimals

Page 17: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

Rounding Off Decimals

Page 18: Rounding Off Decimals. 0 10 20 30405060908070 100 Rounding Off Decimals Round off 37 to the nearest ten 37 is between 30 and 40

4.8 liter is ______ liter when rounded off to the nearest liter.

7.259 kg is ______ kg when rounded off to the nearest kilogram.

8.49 m is ______ m when rounded off to the nearest meter.

5

7

8

Rounding Off Decimals