Name:
7th Grade
Class:
Date:
Unit 2: Operations with Rational Numbers
Lesson 3: Anchor Problems
Lesson 3
Unit 1: Operations with Rational Numbers
7th Grade Math
Name: _______________________
__________________________________________________________________________________________
Objective:1.) I can describe situations in which opposite numbers combine to make
zero.
Date: _______________________
Problem 1.
Four people all started out with a positive balance in their checking accounts. The chart below shows the starting balance for each
person and the activity he or she had in the last week.
Starting Balance
Activity
Andrea
$56
Deposited $56
Blake
$100
Spent $56
Cameron
$56
Spent $100
Dakota
$56
Spent $56
Describe what each person’s checking account looks like at the end of the week.
Andrea :
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
Blake :
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
Cameron :
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
Dakota :
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
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Page 1
Problem 2.
Name:
Class:
Date:
A cabin is located on a mountain at an elevation of 215 feet above sea level. A hiker leaves the cabin and goes on a hike that increases
Lesson
3 by 30 feet. Which situations
Unit
1: Operations
Numbers
7th apply.
Grade Math
her altitude
would
bring the hikerwith
back Rational
to her original
elevation at the cabin? Select all that
Problem
2.
__________________________________________________________________________________________
a. The hiker increases her altitude by 30 feet.
hikeron
decreases
her altitude
by 30 feet.
A cabinb. isThe
located
a mountain
at an elevation
of 215 feet above sea level. A hiker leaves the cabin and goes on a hike that increases
c. Thebyhiker
decreases
altitude would
by 215bring
feet. the hiker back to her original elevation at the cabin? Select all that apply.
her Problem
altitude
302.feet.
Whichher
situations
d. The hiker decreases her altitude by 245 feet.
cabin
is hiker
located
on aher
mountain
atby
an30
elevation
215
feetdecreases
above seaher
level.
A hiker
leaves the
e. The
decreases
her altitude
by
15 feetof
and
then
altitude
by another
15 cabin
feet. and goes on a hike that increases
a.AThe
hiker
increases
altitude
feet.
her
altitude
by
30
feet.
Which
situations
would
bring
the
hiker
back
to
her
original
elevation
at
the
cabin? Select all that apply.
f. The
hiker
decreases
altitude
feet and then increases her altitude by 15 feet.
b. The
hiker
decreases
herher
altitude
by by
30 15
feet.
c. The
hiker
decreases
herher
altitude
byby215
a. The
hiker
increases
altitude
30feet.
feet.
d. The
hiker
decreases
herher
altitude
byby
245
b. The
hiker
decreases
altitude
30feet.
feet.
Problem
2.decreases
e. The
hiker
herher
altitude
byby
15215
feetfeet.
and then decreases her altitude by another 15 feet.
c. The
hiker
decreases
altitude
d. The
hiker
decreases
altitude
f. The
hiker
decreases
herher
altitude
by by
15 245
feetfeet.
and then increases her altitude by 15 feet.
A cabin
is located on a mountain at an elevation of 215 feet above sea level. A hiker leaves the cabin and goes on a hike that increases
e. The hiker decreases her altitude by 15 feet and then decreases her altitude by another 15 feet.
her altitude
30 decreases
feet. Which
would
bring
back to
original
f. Theby
hiker
hersituations
altitude by
15 feet
andthe
thenhiker
increases
herher
altitude
by elevation
15 feet. at the cabin? Select all that apply.
a. The hiker increases her altitude by 30 feet.
b. The hiker decreases her altitude by 30 feet.
c. The hiker decreases her altitude by 215 feet.
d. The hiker decreases her altitude by 245 feet.
e. The hiker decreases her altitude by 15 feet and then decreases her altitude by another 15 feet.
f. The hiker decreases her altitude by 15 feet and then increases her altitude by 15 feet.
Problem 3.
a. Write a situation that could be described using the equation shown below.
Problem
Problem
3. 3.
__________________________________________________________________________________________
b. Represent your situation on a number line. Use labels and arrows to show changes in value.
a.c. Write
a situation
that
could
described
equation
shown
below.
a. Write
a situation
that
could
be be
described
thetheequation
shown
below.
Two
numbers
that
add
together
to get using
0 using
are called
additive
inverses
of each other. Name 2 more examples of additive inverses.
__________________________________________________________________________________________
__________________________________________________________________________________________
b. Represent your situation on a number line. Use labels and arrows to show changes in value.
b. Represent
your situation
a number
line.
Use
labels
and arrows
to show
changes
in value.
c. Two numbers
that add on
together
to get
0 are
called
additive
inverses
of each
other. Name
2 more examples of additive inverses.
Problem
3. that add together to get 0 are called additive inverses of each other. Name 2 more examples of additive inverses.
c. Two numbers
a. Write a situation that could be described using the equation shown below.
b. Represent your situation on a number line. Use labels and arrows to show changes in value.
c. Two numbers that add together to get 0 are called additive inverses of each other. Name 2 more examples of additive inverses.
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