•
Camp Hickory Hills has
442 registered
the summer.
MAIN IDEA
leader is needed for every
I will estimate
quotients
10 campers, about how many
group leaders are needed?
using
rounding and
compatible
campers for
If one group
numbers,
442 -i- 10
!
KY Program of Studies
!
= 40
400 -i- 10
MA-5-NPO-S-El
Students will
explore appropriate
estimation
procedures for
different situations.
Also addresses
So, about 40 group leaders are needed.
To estimate a quotient, you can use compatible numbers, or
numbers that are easy to divide mentally. Look for numbers that
are part of fact families.
MA-5-NPO-S-E2.
Find a Compatible
KYMath Online
macmillanmh.com
(» Estimate
• Extra Examples
1S6
Dividend
+ 3.
156 -i- 3
• Personal Tutor
• Self-Check Quiz
!
150
-i-
!
Change
3
15 and 3 are compatible numbers.
150 -:- 3
=
50
156 to 150 because
Divide mentally.
50, 156 -i- 3 is about 50.
o
Find a Compatible
Estimate
Divisor
3,200 .;. 90.
3.200 -i- 90
I
!
3,200 -i- 80
Change 90 to 80 because
32 and 8 are compatible numbers.
3,200 -:- 80 = 40
Divide mentally.
50, 3,200 -i- 90 is about 40.
152
Chapter
4 Divide Whole
Numbers