© 2007 M. Tallman

© 2007 M. Tallman

Find your number.Look right next door.

34

Step 1: Circle the digit in the place that you must round to.

Step 2: Draw an arrow to the place on the right.

Round to the nearest thousands place.

, 89

© 2007 M. Tallman

000389

Step 1: Circle the digit in the place that you must round to.

Step 2: Draw an arrow to the place on the right.

Step 3: If the number is four or less, then the circled number stays the same.

Step 4: All numbers to the right of the circled number become zeros.

4 or less, just ignore.

3 is less

than 4

Just Ignore!

4,

Round to the nearest thousands place.

© 2007 M. Tallman

7

Find your number.

Round to the nearest hundreds place.

Look right next door.

Step 1: Circle the digit in the place that you must round to.

Step 2: Draw an arrow to the place on the right.

53, 1

© 2007 M. Tallman

65

Step 1: Circle the digit in the place that you must round to.

Step 2: Draw an arrow to the place on the right.

Step 3: If the number is four or less, then the circled number stays the same.

Step 4: If the number is 5 or greater then add 1 to the circled number.

Step 5: All numbers to the right of the circled number become zeros.

0071

4 or less, just ignore.5 or more, add 1 more.

7 is not less than

4

Round to the nearest hundreds place.

5 + 1 = 6

3,

© 2007 M. Tallman

00

72 × 47

7 5× = 3Step 1: Rounding is always first. Decide which place to round to.

Step 2: Round 72 and 47 to the nearest ten.

Step 3: “Box” and solve the basic math fact.

Step 4: Count the zeros in both factors. Place the zeros in the product.

0 521 1

The actual answer is 3,384,

so our estimation is

pretty accurate.

The actual answer is 3,384,

so our estimation is

pretty accurate.

02

,

© 2007 M. Tallman

00 0

578 × 63

6 6× = 3Step 1: Rounding is always first. Decide which place to round to.

Step 2: Round 578 to the nearest hundred and 63 to the nearest ten.

Step 3: “Box” and solve the basic math fact.

Step 4: Count the zeros in both factors. Place the zeros in the product.

0 631 1

02

,2

03

The actual answer is

36,414, so our estimation is

pretty accurate.

The actual answer is

36,414, so our estimation is

pretty accurate.

© 2007 M. Tallman

0 0

$45 × 785

$5 8× = $4Step 1: Rounding is always first. Decide which place to round to.

Step 2: Round $45 to the nearest dollar and 785 to the nearest hundred.

Step 3: “Box” and solve the basic math fact.

Step 4: Count the zeros in both factors. Place the zeros in the product.

00 031 1

02

,2

03

© 2007 M. Tallman

0 0

57 × 7,342

6 7× = 4Step 1: Rounding is always first. Decide which place to round to.

Step 2: Round 57 to the nearest ten and 7,342 to the nearest thousand.

Step 3: “Box” and solve the basic math fact.

Step 4: Count the zeros in both factors. Place the zeros in the product.

,000 231 1

02

,2

034

04

© 2007 M. Tallman

00 0

435 × 289

4 3× = 1Step 1: Rounding is always first. Decide which place to round to.

Step 2: Round 435 and 289 to the nearest hundred.

Step 3: “Box” and solve the basic math fact.

Step 4: Count the zeros in both factors. Place the zeros in the product.

00 231 1

02

,2

034

04

© 2007 M. Tallman

1. $21.89 × $6.78

5,000

50,000100×500=

560,000800 ×700 =

$140.00

4. 4,897 × 598

3. 145 × 467

Estimate Each Product

2. 767 × 721

$20.00×$7.00=

300,000×600 =

© 2007 M. Tallman

5. 92 × 2,228

$2,000

4,000,0008,000×500=

$49,000$70 ×700 =

180,000

8. $2,197 × 45

7. 8,432 × 467

Estimate Each Product

6. $72 × 679

90×2,000=

$100,000×50 =

© 2007 M. Tallman

9. 789 × 567

9,000

240,0003,000×80=

180,00030×$9,000=

480,000

12. 8,813 × 98

11. 3,467 × 77

Estimate Each Product

10. 27 × $8,567

800×600 =

900,000×100 =