Estimating Adding Decimals

Adding Whole

Numbers

Subtracting Decimals

Subtracting Whole

Numbers

$100 $100 $100 $100 $100

$200 $200 $200 $200 $200

$300 $300 $300 $300 $300

$400 $400 $400 $400 $400

$500 $500 $500 $500 $500

$100 Estimating

Round the underlined digit.

17.4

What is….

• 17

$200 Estimating

Round 2.934 to the nearest hundredth.

What is….

• 2.930 (or 2.93)

$300 Estimating

Estimate the sum.

847 + 379

What is….

• 840 + 380 = 1220

• 800 + 400 = 1200

$400 Estimating

Estimate the difference.

7,647 - 369

What is…

• 7,600 – 400 = 7,200

• 7,650 – 370 = 7,280

$500 Estimating

Round 95.25 to the nearest tenth, the nearest whole number, and nearest 10.

What is….

• 95.3

• 95

• 100

$100 Adding Decimals

Add.

1.03 + 0.36

What is…

• 1.39

$200 Adding Decimals

Add.

2.02 + 0.78

What is…

• 2.80

$300 Adding Decimals

Add.

$8.23

+$64.10

What is…

• $72.33

$400 Adding Decimals

Add.

4.298 + 0.65

What is..

• 4.948

$500 Adding Decimals

Add.

0.868 + 15.973

What is…

• 16.841

$100 Adding Whole Numbers

Add.

18,269 + 109,347

What is…

• 127,616

$200 Adding Whole Numbers

Add.

7,469 + 80,374

What is..

• 87,843

$300 Adding Whole Numbers

Add.

19,335 + 24,281

What is…

• 43,616

$400 Adding Whole Numbers

Add.

75,977 + 24,683

What is…

• 100,660

$500 Adding Whole Numbers

Add.

102, 369 + 60, 320

What is…

• 162,689

$100 Subtracting Decimals

Find the difference.

16.82 – 5.21

What is…

• 11.61

$200 Subtracting Decimals

Find the difference.

7.21 – 6.1

What is…

• 1.11

$300 Subtracting Decimals

Find the difference.

7.8 – 4.9

What is…

• 2.9

$400 Subtracting decimals

Find the difference.

$20.60 - $14.35

What is…

• $6.25

$500 Subtracting Decimals

Find the difference.

43.905 – 7.526

What is…

• 36.379

$100 Subtracting Whole Numbers

Subtract.

4,002 – 3,765

What is…

• 237

$200 Subtracting Whole Numbers

Subtract.

58,005 – 1,098

What is…

• 56,907

$300 Subtracting Whole Numbers

Subtract.

113,300 – 1,774

What is…

• 111,526

$400 Subtracting Whole Numbers

Subtract.

454,900 – 33,870

What is…

• 421,030

$500 Subtracting Whole Numbers

Subtract

103,558 – 64,671

What is…

• 38,887