Unit 1
Tom purchased a sandwich for $4.42 and a soda for $1.45. If he paid with a $10 dollar bill, how much change did he receive.
20-4.42-1.45= $ 14.13
What is the value of the opposite of (-5 1/2)
-(-5 1/2)
The opposite of -5 1/2 is +5 1/2
Name the quadrant of the following ordered pair.
( -3, -2)
Both x and y values are negative.
GCF of 64 and 12
GCF of 64 and 12 is ...4
LCM of 8 and 12
Least Common Multiple= 24
Multiples of 8: 8, 16, 24, 32
Multiples 12: 12, 24, 36
Find the GCF of 12 and 16
Greatest Common Factor= 4
Factors of 12: 1,2,3,4,6,12
Factors of 16: 1,2,4,4,8,16
Which set of absolute values is listed in order from greatest to least?
A |16|, |–9|, |–15|, |14|
B |–19|, |16|, |–10|, |8|
C |–21|, |–6|, |5|, |9|
D |31|, |–8|, |–10|, |8|
B |–19|, |16|, |–10|, |8|
Complete definition of the absolute value of a number.
The absolute value is the distance of a number to zero.
How far away a number is from zero.
Absolute values are always positive.
On Monday, Carl’s account balance was $20.00. On Tuesday his account balance was $-35.00. Which day was his account balance higher?
On Monday $20.00
Write the absolute value and describe the distance from zero.
A bank account has a balance of -$20.
The absolute value of -20 is 20. It is 20 units below zero.
Solve by dividing each value by 1/3.
A. 1/2
B. 3/4
C. 3/7
Keep Change Flip
A. 1 1/2
B. 2 1/4
C. 1 2/7
Rate these days from coldest to hottest temperatures.
Monday: 4 F
Tuesday: 12 F
Wednesday: -10 F
Thursday: -15 F
Friday: -1 F
Coldest-hottest.
-15,-10, -1, 4, 12
Points A and B are reflected over _______axis.
A( -4, -3)
B( 4, -3)
They are reflected over the y axis.
A. Quadrant 3, both x and y are negative
B. Quadrant 4, the x is positive the y is negative
Write the absolute value and describe the distance from zero.
The temperature last night was 50°F above zero.
The absolute value of 50 is 50. It is 50 degrees above zero.
Danny had 145 credits for his video game. He used 40 credits to unlock the secret palace. How many credits does he have left?
145-40=105 credits.
After the party, 1 /3 of a birthday cake was uneaten. Mom cut the leftover cake into 4 equal shares to send home with the party guests. What fraction of the whole cake will each guest take home?
1/3 divided by 4 = 1/12
Tip: Keep Change Flip
Which inequality is correct?
A. -20 feet > 30 feet
B. 20 feet >- 30 feet
C. -30 feet >-20 feet
D. 20 feet> 30 feet
B. 20 feet >- 30 feet
Find the range for the x and y axes from the following points.
D. (4, 0.5)
E. ( -4, -0.2 )
F. (5, -0.4)
G. (-1, -1)
H. (2, 2)
Range x= -4 to 5
Range y= -1 to 2
Mrs. Plascencia promised donuts to her students. She has $20.50 in her wallet. She found $1.75 in her car and 85 cents in her pocket. How much money does she have to buy donuts.
20.5+1.75+0.85= $23.10
Which temperature are arranged in the right order?
A. -7 F >3 F
B. 3 F< -7 F
C. -3 F<7 F
D. 7 F< 3 F
C. -3 F < 7 F
13.345 x 1.9
13.345 x 1.9=25.3555
estimate
13x2= 26
A water lily’s roots are anchored in the mud 10 ½ inches underwater. The top of the blossom is 4 1/4 inches above the surface. What is the total length of the plant?
10.5+4.25= 14.75 inches
14 3/4
Reflect the following points over the x axis
A. (3,2)
B.(-2,1)
Aa.( 3,-2)
Bb. ( -2, -1)
Dwayne is hand painting wooden signs as holiday gifts. He plans to use a 59.4-inch long scrap of wood left over from another project. If each sign will be 5.4 inches long, how many signs can he make?round to the nearest whole number.
59.4 divided by 5.4= 11 wooden signs.
Identify the correct statements.
A. |79|=-79
B. |—20| =20
C. |—5| > - 5
D. |60|=60
E. -30>28
B, C, D
B. |—20| =20
C. |—5| > - 5
D. |60|=60