UNIT 1 AND UNIT 2 DAKOTA

SUBTRACT

100

3-7

-4

200

8-(-2)

10

300

15 - (-18)

33

400

37 − 48

-11

500

WEATHER At 7 P.M., the temperature was 4°C. By 8 P.M., it had increased 2°C. By 9 P.M., it had decreased 1°C. By 10 P.M., it had decreased 15°C. What was the temperature at 10 P.M.?

–10°C

LINE SEGMENTS

100

35 + x = 90

55

200

x − 34 = 146

180

300

3x = 180

60

400

− x/3 = 17

-51

500

GEOGRAPHY Russia, the largest country in the
world in terms of area, occupies 6,592,800 square
miles. The difference in area between Russia and
Canada is 2,740,991 square miles. Write and solve an equation to find the area of Canada

c + 2,740,991 = 6,592,800; 3,851,809 mi2

DISTANCE

100

2x − 60 = 30

45

200

180 + 5x = 360 − 4x

20

300

(x+6)+3x=90

21

400

(3x + 1) + (2x − 6) = 180

37

500

WEIGHTS The difference between the weight of
3 gallons of liquid and 5-pound brick is 19 pounds.
Write an equation to represent this situation. What
is the weight of 1 gallon of the liquid?

3g −5 = 19; 8 lb

MIDPOINTS AND BISECTORS

100

2.3 + ( − 1.4)

0.9

200

− 40.5 + 3.07

-37.43

300

1/3 +(-1/2)

-1/6

400

-3/4+3/8

-3/8

500

PERSONAL FINANCE Ms. Takanawa has three bank accounts. The balances in the accounts are $436.12, $1178.05, and −$0.05. How much money does she have altogether in these accounts?

$1614.12

Statements, Conditionals, and Biconditionals

100

If an object is red, then it is not blue.

TRUE

200

If an object is not red, then it is not blue.

FALSE

300

If an object is not blue, then it is not red.

FALSE

400

If an object is blue, then it is not red.

TRUE

500

Rewrite this statement as a true if-then statement.
An even number is divisible by 2.

If a number is even, then it is divisible by 2. If a number is divisible by 2, then it is even.