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```									         Teaching Concept #1
1.3.k2
Finding Whole Numbers on a
Number Line

Place the following numbers on the line:
230, 333, 450, 470, 336

Slide 1
Teaching Concept #2
1.3.k2
Finding Fractions on a Number
Line

0                               1

0           1/4     1/2   3/4   1

Make the ultimate fraction number line which
includes all the above fractions.

Slide 2
Teaching Concept #3
1.3.k2
Finding Decimals on a Number
Line

Place the following numbers on the line:
.25, .3, .21, .99

Slide 3
Teaching Concept #4
1.3.k2
Knowing the Place Value
of Whole Numbers
(Red)          (Blue)       (Green)    (Yellow)   (Purple) (Black)   (Black)   (Blue)    (Orange)

HUNDRED
TEN THOUSANDS   THOUSANDS   HUNDREDS    TENS    ONES                TENTHS   HUNDREDTHS
THOUSANDS

4              5             6          3          2       1       DECIMAL     9          8

Which number is in the hundreds place?
Which number is in the thousands place?
Which number is in the tens place?
Which number is in the hundredths place?
Which number is in the ones place?                                               Slide 4
Teaching Concept #5
1.3.k2
Estimation With Whole Numbers

12,850

Estimate the number to the nearest hundred.

Slide 5
Teaching Concept #6
1.3.k2
Estimation With Fractions and
Mixed Numbers

Estimating with fractions is just like estimating
with whole numbers. When rounding or
estimating a fraction, you must decide if
the fraction is ½ or greater.

What whole number is closest to…
¾?
4 1/6?
Slide 6
Teaching Concept #7
1.3.k2
Estimation With Decimals

12.568

Estimate the number to the nearest hundredth.

Slide 7
Application #1
1.3.k2
Application

Charlie wants to buy a new toy. The toy costs
\$14.89. Charlie’s mom gave him \$15.75 to
spend at the store. Estimate about how much
the toy will cost and explain whether or not
Charlie has enough money.

Slide 8
Concrete Example #1
1.3.k2
Example:

Slide 9
Step-by-Step #1
1.3.k2
Front-end Estimation

Use front-end estimation to estimate the
sum of \$2.56, \$3.24, \$7.78, and \$5.30.

Slide 10
Step-by-Step #2
1.3.k2
Front-End Estimation

Use front-end estimation to estimate the
sum of 6.69, 7.56, 8.50, and 9.31.

Slide 11
Step-by-Step #3
1.3.k2
Estimation of Mixed Numbers

Estimate each mixed number to the
nearest whole number and write the
sum: 8 ¾ + 6 1/8 + 1 ½.

Slide 12

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