5 Minute Check Estimate and divide.Round to the nearest tenth,
if necessary. 1. 10.22 14 2. 59.84 32 3. 751.2 25 4. 6271 4
Slide 2
5 Minute Check Estimate and divide.Round to the nearest tenth,
if necessary. 1. 10.22 14
Slide 3
5 Minute Check Estimate and divide.Round to the nearest tenth,
if necessary. 1. 10.22 14 1 00.73 = 0.7 14)10.22 -98 42 -42 00
Slide 4
5 Minute Check Estimate and divide.Round to the nearest tenth,
if necessary. 2. 59.84 32
Slide 5
5 Minute Check Estimate and divide.Round to the nearest tenth,
if necessary. 2. 59.84 32 2 01.87 = 1.9 32)59.84 -32 278 -256 224
-224
Slide 6
5 Minute Check Estimate and divide.Round to the nearest tenth,
if necessary. 3. 751.2 25
Slide 7
5 Minute Check Estimate and divide.Round to the nearest tenth,
if necessary. 3. 751.2 25 30 030.04 = 30 25)751.20 -75 0120
-100
Slide 8
5 Minute Check Estimate and divide.Round to the nearest tenth,
if necessary. 4. 6271 4
Slide 9
5 Minute Check Estimate and divide.Round to the nearest tenth,
if necessary. 4. 6271 4 1500 1567.75 = 1567.9 4)6271.00 -4 22 -20
27 -24 31 -28 30 -28 20
Slide 10
Monday, Sept 29 Lesson 6.3.8 Divide Decimals by Decimals
Slide 11
Objective: To understand how to divide decimals by
decimals.
Slide 12
Divide Decimals by Decimals When dividing a decimal by a
decimal, change the divisor to a whole number. To do this, move the
decimal in both the divisor and dividend to the right. Then divide
as before.
Slide 13
Divide Decimals by Decimals Find 1.71 0.9
Slide 14
Divide Decimals by Decimals Find 1.71 0.9 Divide a Decimal by a
Decimal. Step 1 Place the numbers in the dividing bracket.
Slide 15
Divide Decimals by Decimals Find 1.71 0.9 Divide a Decimal by a
Decimal. Step 1 Place the numbers in the dividing bracket.
0.9)1.71
Slide 16
Divide Decimals by Decimals Find 1.71 0.9 Divide a Decimal by a
Decimal. Step 2 Move the decimal point to the right in both numbers
until the divisor is a whole number. 0.9)1.71
Slide 17
Divide Decimals by Decimals Find 1.71 0.9 Divide a Decimal by a
Decimal. Step 2 Move the decimal point to the right in both numbers
until the divisor is a whole number. 09.)17.1
Slide 18
Divide Decimals by Decimals Find 1.71 0.9 = To Divide a decimal
by a decimal Step 3 Divide as before. You can drop the decimal
point and zero in front of the divisor. 9 )17.1
Slide 19
Divide Decimals by Decimals Find 1.71 0.9 = 1.9 To Divide a
decimal by a decimal Step 3 Divide as before. You can drop decimal
point and the zero in front of the divisor. 1.9 9 )17.1 -9 81 -81
00
Divide Decimals by Decimals The average persons stride length
(the distance covered by one step) is about 2.5 ft long. How many
steps would the average person take to travel 50 ft? Do this on
your own.
Slide 35
Divide Decimals by Decimals The average persons stride length
(the distance covered by one step) is about 2.5 ft long. How many
steps would the average person take to travel 50 ft? 20 steps 020
2.5)50 = 25)500. -50 00
Slide 36
Divide Decimals by Decimals Frank made $ 98.20 last week. Erin
made $51.20 last week. How many times more was Franks paycheck as
Erins? Round to the nearest tenth. (Do this on your own)
Slide 37
Divide Decimals by Decimals Frank made $ 98.20 last week. Erin
made $51.20 last week. How many times more was Franks paycheck as
Erins? Round to the nearest tenth. Take out the ugly numbers and
substitute friendly numbers. What if Frank made $100 and Erin made
$50. How many more times was Franks paycheck? What operation did
you use to solve?
Slide 38
Divide Decimals by Decimals Frank made $ 98.20 last week. Erin
made $51.20 last week. How many times more was Franks paycheck as
Erins? Round to the nearest tenth. 1.9 as much 0001.91 51.20)98.20
= 5120)9820.00 -5120 47000 -46080 9200
Slide 39
Divide Decimals by Decimals Alaska has a coastline of about
6.64 thousand miles. Florida has a coastline of about 1.35 thousand
miles. How many times more coastline does Alaska have than Florida?
Round to the nearest tenth, if necessary. Do this on your own.
Slide 40
Divide Decimals by Decimals Alaska has a coastline of about
6.64 thousand miles. Florida has a coastline of about 1.35 thousand
miles. How many times more coastline does Alaska have than Florida?
Round to the nearest tenth, if necessary. Take out the ugly numbers
and substitute friendly numbers. What if Alaskas coastline was 7
thousand miles and Floridas coastline was 1 thousand miles? How
many more times is Alaska than Florida? What operation did you use
to solve?
Slide 41
Divide Decimals by Decimals Alaska has a coastline of about
6.64 thousand miles. Florida has a coastline of about 1.35 thousand
miles. How many times more coastline does Alaska have than Florida?
Round to the nearest tenth, if necessary. 004.9 4.9 times 1.35)6.64
= 135)664.00 -540 1240 1215 250
Slide 42
Divide Decimals by Decimals Identify which expression does not
belong. Explain. 49 7 4.9 7 0.49 0.7 0.049 0.07
Slide 43
Divide Decimals by Decimals Identify which expression does not
belong. Explain. 49 7 = 7 4.9 7 = 0.7 0.49 0.7 = 0.7 0.049 0.07 =
0.7
Slide 44
Divide Decimals by Decimals Homework Practice 6.3.8 Due
Tuesday, Sept 30 Must show all work. Chapter 6.3 Test -Wednesday,
Oct 1 Accum Rev 3 due by Oct 1
