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Approximation Objectives for the lesson •Practice at rounding to the nearest 10 / 100 / 1000 •Decimal Places & Significant Figures
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Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Apr 01, 2015

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Eliza Feltham
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Page 1: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Approximation

Objectives for the lesson

•Practice at rounding to the nearest 10 / 100 / 1000

•Decimal Places & Significant Figures

Page 2: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the number 2741 to the nearest;a.) 10, b.) 100, c.) 1000

Page 3: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the number 2741 to the nearest;a.) 10, b.) 100, c.) 1000.

2 7 4 1

Page 4: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the number 2741 to the nearest;a.) 10, b.) 100, c.) 1000.

2 7 4 1

Thousands

Hundreds

Tens

Units

Page 5: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the number 2741 to the nearest;a.) 10, b.) 100, c.) 1000.

2 7 4 1

Thousands

Hundreds

Tens

Units

a.) 2740

Page 6: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the number 2741 to the nearest;a.) 10, b.) 100, c.) 1000.

2 7 4 1

Thousands

Hundreds

Tens

Units

a.) 2740 b.) 2700

Page 7: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the number 2741 to the nearest;a.) 10, b.) 100, c.) 1000.

2 7 4 1

Thousands

Hundreds

Tens

Units

a.) 2740 b.) 2700 c.) 3000

Page 8: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Let’s look at a number line for rounding to the nearest 10

2 7 4 1

Thousands

Hundreds

Tens

Units

2710 2720 2730 2740 2750 2760

Page 9: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Let’s look at a number line for rounding to the nearest 100

2 7 4 1

Thousands

Hundreds

Tens

Units

2400 2500 2600 2700 2800 2900

Page 10: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Let’s look at a number line for rounding to the nearest 1000

2 7 4 1

Thousands

Hundreds

Tens

Units

1000 2000 3000 4000

Page 11: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 43682.) 10273.) 87674.) 61115.) 32846.) 21927.) 74518.) 90739.) 545610.) 9672

Page 12: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 10273.) 87674.) 61115.) 32846.) 21927.) 74518.) 90739.) 545610.) 9672

Page 13: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 1027 a.) 1030 b.) 1000 c.) 10003.) 87674.) 61115.) 32846.) 21927.) 74518.) 90739.) 545610.) 9672

Page 14: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 1027 a.) 1030 b.) 1000 c.) 10003.) 8767 a.) 8770 b.) 8800 c.) 90004.) 61115.) 32846.) 21927.) 74518.) 90739.) 545610.) 9672

Page 15: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 1027 a.) 1030 b.) 1000 c.) 10003.) 8767 a.) 8770 b.) 8800 c.) 90004.) 6111 a.) 6110 b.) 6100 c.) 60005.) 32846.) 21927.) 74518.) 90739.) 545610.) 9672

Page 16: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 1027 a.) 1030 b.) 1000 c.) 10003.) 8767 a.) 8770 b.) 8800 c.) 90004.) 6111 a.) 6110 b.) 6100 c.) 60005.) 3284 a.) 3280 b.) 3300 c.) 30006.) 21927.) 74518.) 90739.) 545610.) 9672

Page 17: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 1027 a.) 1030 b.) 1000 c.) 10003.) 8767 a.) 8770 b.) 8800 c.) 90004.) 6111 a.) 6110 b.) 6100 c.) 60005.) 3284 a.) 3280 b.) 3300 c.) 30006.) 2192 a.) 2190 b.) 2200 c.) 20007.) 74518.) 90739.) 545610.) 9672

Page 18: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 1027 a.) 1030 b.) 1000 c.) 10003.) 8767 a.) 8770 b.) 8800 c.) 90004.) 6111 a.) 6110 b.) 6100 c.) 60005.) 3284 a.) 3280 b.) 3300 c.) 30006.) 2192 a.) 2190 b.) 2200 c.) 20007.) 7451 a.) 7450 b.) 7500 c.) 70008.) 90739.) 545610.) 9672

Page 19: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 1027 a.) 1030 b.) 1000 c.) 10003.) 8767 a.) 8770 b.) 8800 c.) 90004.) 6111 a.) 6110 b.) 6100 c.) 60005.) 3284 a.) 3280 b.) 3300 c.) 30006.) 2192 a.) 2190 b.) 2200 c.) 20007.) 7451 a.) 7450 b.) 7500 c.) 70008.) 9073 a.) 9070 b.) 9100 c.) 90009.) 545610.) 9672

Page 20: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 1027 a.) 1030 b.) 1000 c.) 10003.) 8767 a.) 8770 b.) 8800 c.) 90004.) 6111 a.) 6110 b.) 6100 c.) 60005.) 3284 a.) 3280 b.) 3300 c.) 30006.) 2192 a.) 2190 b.) 2200 c.) 20007.) 7451 a.) 7450 b.) 7500 c.) 70008.) 9073 a.) 9070 b.) 9100 c.) 90009.) 5456 a.) 5460 b.) 5500 c.) 500010.) 9672

Page 21: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Rounding to the nearest 10, 100, 1000……

Round the following numbers to the nearest:a.) 10 b.) 100 c.) 1000

1.) 4368 a.) 4370 b.) 4400 c.) 40002.) 1027 a.) 1030 b.) 1000 c.) 10003.) 8767 a.) 8770 b.) 8800 c.) 90004.) 6111 a.) 6110 b.) 6100 c.) 60005.) 3284 a.) 3280 b.) 3300 c.) 30006.) 2192 a.) 2190 b.) 2200 c.) 20007.) 7451 a.) 7450 b.) 7500 c.) 70008.) 9073 a.) 9070 b.) 9100 c.) 90009.) 5456 a.) 5460 b.) 5500 c.) 500010.) 9672 a.) 9670 b.) 9700 c.) 10000

Page 22: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Decimal Places & Significant Figures

Round 57.452945 to 1, 2, 3, 4 and 5 decimal places

Page 23: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Decimal Places & Significant Figures

Round 57.452945 to 1, 2, 3, 4 and 5 decimal places

1dp 57.52dps 57.453dps 57.4534dps 57.45295dps 57.45295

Page 24: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Decimal Places & Significant Figures

Round 57.452945 to 1, 2, 3, 4 and 5 decimal places

1dp 57.52dps 57.453dps 57.4534dps 57.45295dps 57.45295

Now try to 1, 2 and 3 significant figures :

Page 25: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

Decimal Places & Significant Figures

Round 57.452945 to 1, 2, 3, 4 and 5 decimal places

1dp 57.52dps 57.453dps 57.4534dps 57.45295dps 57.45295

Now try to 1, 2 and 3 significant figures :

1sf 602sfs 573sfs 57.5

Page 26: Approximation Objectives for the lesson Practice at rounding to the nearest 10 / 100 / 1000 Decimal Places & Significant Figures.

To finish

Try and come up with a pair of different numbers that are the same when rounded

to 2dps and 4 sfs.