Transcript How do I round?

PLACE VALUE!
Thousands
Hundreds
Tens
Ones
Tenths
.1
1/10
Hundredths
.01
1/100
Thousandths
.001
1/1000
Ten
Thousandths
.0001
1/10000
Activity book page 1 Unit 6
Here is a garden divided into different plots. The shaded part is planted with lettuce the rest is
planted with tomatoes. What part of the garden is planted with lettuce? How would you say that
with a percent?
Fraction?
Decimal?
Here is a garden that is the same size. How much of this garden is planted with lettuce?
How do you know that 5 tenths and 50 hundredths are equal?
What fraction and decimal is represented in the gardens at the bottom of page 1? How do
you know?
Practie-Complete activity book page 2-4
79,321
Thousands
Ten
Thousands
Hundreds
Tens
Ones
Tenths
Hundredths
.1
.01
1/10
1/100
Thousandths
.001
1/1000
79,321.45
Ten
Thousandths
.0001
1/10000
SAB p. 7
SAB pg. 9
SAB pg. 9
Decimals: 0.75, _______
Fractions:
Percent:
Shade in 0.75 in each square.
Decimals: 0.75, _______
Fractions:
Percent:
SAB pg. 10
Shade in 0.125 in each square.
Decimals: 0.125, _______
Fractions:
Percent:
Decimals: 0.125, _______
Fractions:
Percent:
SAB pg. 11
Decimals: 0.3, _______
Fractions:
Percent:
Shade in 0.3 in each square.
Decimals: 0.3, _______
Fractions:
Percent:
SAB pg. 12
Shade in 0.15 in each square.
Decimals: 0.15, _______
Fractions:
Percent:
Decimals: 0.15, _______
Fractions:
Percent:
SAB pg. 13
Shade in 0.78 in each square.
Decimals: 0.78, _______
Fractions:
Percent:
Decimals: 0.78, _______
Fractions:
Percent:
How can we record one tenth?
0.1 = 1/10=10/100 = 0.10 = 10% = 100/1000 = 0.100
SAB pg. 16
0.6
0
Where should it go?
2
1
How can it be more precise?
0
1
2
Draw this # line!
1
0
2
Label with these fractions!
1.25
0.3
0.5
1.8
0.125
0.25
0.02
0.3
Order from least to greatest
Decimal grids
How do I round?
1. Determine the place that
you are rounding to.
2. Underline the digit being rounded.
3. Circle the number to the right.
4. Follow the rule.
500
543
600
or
540
543
550
Rounding Rule
4 and below...let it go!!
(4, 3, 2, 1, 0)
5 and above...give it a
(5, 6, 7, 8, 9)
shove!!
Explain where 1.68 belongs?
Shade your hundreds grids to show 1.68
1.68
What does the digit in the tenths place mean?
Which digit tells you how many hundredths there are?
How does that help you decide whether the number is closer to 1.6 or
1.7?
Round to the nearest hundredth:
4.923
4.92
4.923
Work with a partner
Round to the nearest whole number:
7.91
7.91
8
7
8