Rounding to Decimal Places
23.45 to 1 dp
23.5
What is the rule of rounding?
If it's 5 or above, round up.
What is the first significant figure in the number 2314?
2
What is 709 rounded to one significant figure?
700
380 000
3.8 x105
9.844 to 2 d.p
9.84
Name the first three whole place value columns.
Hundreds, Tens and Units.
Identify the number of significant figures: 0.00000000001
1
What is 0.94 rounded to one significant figure?
0.9
914 000 000
9.14 x 108
0.0452 to 3 d.p
5.9
Name the first three decimal number places.
Tenths, Hundredths and Thousandths.
What is the second significant figure in the number 43879?
3
What is rounded 2540 to two significant figures?
2500
0.0004
4 x 10-4
71.992 to 2 d.p
71.99
What is the simple called that separates digits.
Decimal.
What is the second significant figure in the number 0.3759?
7
What is 0.578 rounded to two significant figures?
0.58
0.001 12
1.12 x 10-3
8.141573 to 4 d.p
8.1416
What do you do if a number is less than 5?
Round down.
What is important to remember when rounding to significant figures?
Place Value
What is 1.068 rounded to two significant figures?
1.1
0.000 000 000 053
5.3 x 10-11