Decimal Places & Significant Figures

What is the first significant figure in 0.0457?

• 4
• 5
• 0
• 7

What is the first significant figure in 23.45?

• 5
• 4
• 3
• 2

What is 78.5 rounded to one significant figure?

• 79
• 78.5
• 70
• 80

What is 0.658 rounded to 1 significant figure?

• 0
• 0.66
• 0.7
• 0.658

What is the 2nd significant figure of 0.40520?

• 4
• 5
• 0
• 2

round to 2 decimal places 22.484

• 22.49

• 22.48

• 22.40

• 22.00

Round off 509.96 to 4 significant figures.

• 509.9
• 509.0
• 510.0
• 510

Round to the nearest whole number. 
325.6 

• 326
• 300
• 320

Round 72.178 to the nearest HUNDREDTH.

• 72.2

• 72

• 72.18

• 73.18

Round 46.786358 to 3 decimal places

• 46.768

• 46.786

• 46.358

• 46786