Rounding
Identifying#of Sig Figs
products and sums
Types of Zeros
100
Round 345 to 1 significant figure  

What is 300 

100

how many sig figs are in 988076453890000

what is 11

100

what is 21.6 x 67.8008

1464.49728

1460

100

0.0001223400

are the zeros at the end significant

what is leading and trailing 

yes

200

round 245600 to 4 sig figs 

245600

200

how many sig figs are in 001.00087364500

what is 12

200

1345 + 457.03

1802.03

1800.00

200

45600982

what is sandwich 

300

6009.006 to 5 sig figs 

What is 6009.0 

300

0.0000010000001?

what is 8

300

.01567 x 85.098

What is 1.3334

1.333


300

3.00900

do the trailing count 

sandwich and trailing 

yes

400

Round .0034578100 to 4 significant figures

What is .003458

400

how many sig figs in 3x10

what is 1

400

20098 + 4569

24667

24670

400

.000000000056789

do any of the zeros count as sig figs 

leading 

no 

500

If 627.45/3.28= 191.2957317, then what is the rounded answer? 

What is 191 

500

how many sig figs are in 4560x1018

4,642,080 what is 6 

500

7878 + 9898

17776

1778



500

4598098000000

do the end zeros count 

how many sig figs 

sandwich and trailing 

no 

7

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