Math Worksheet Answer Key

 Class:____________ Name: :____________

Super Fun Math Exam review #1

Approximation & Estimation:

Round to the nearest thousand.

a. 1,539 = 2,00 h. 8,764 = 9,000 o. 3,695 = 4,000

b. 8,220 = 8,000 i. 3,599 = 4,000 p. 1209 = 1,000

c. 3,941 = 4,000 j. 5,912 = 6,000 q. 1,908 = 2,000

d. 5,388 = 5,000 k. 3160 = 3,000 r. 1,329 = 1,000

e. 6,273 = 6,000 L. 2,046 = 2,000 s. 4,218 = 4,000

f. 9,186 = 9,000 m. 7,284 = 7,000 t. 1,658 = 2,000

g. 9,129 = 9,000 n. 4,137 = 4,000 u. 6,086 = 6,000

Round to the nearest ten thousand.

a. 87,211 = 87,000             h. 710,565 = 710,000           o. 580,169 = 580,000

b. 422,798 = 420,000 i. 288,335 = 290,000 p. 908,579 = 910,000

c. 931,268 = 930,000 j. 492,621 = 490,000 q. 627,154 = 630,000

d. 274,768 = 270,000 k. 229,295 = 230,000 r. 768,194 = 770,000

e. 605,176 = 610,000 L. 541,473 = 540,000 s. 431,586 = 430,000

f. 285,896 = 290,000 m. 275,370 = 280,000 t. 582,072 =580,000

g. 914,574 = 910,000 n. 820,384 = 820,000 u. 15,850 = 20,000 

Solve the following problems using the order of operations.

1)   21 ÷ 3 + (3 × 9) × 9 + 5 2)     18 ÷ 6 × (4 - 3) + 6

      255 9

3)    14 - 8 + 3 + 8 × (24 ÷ 8)         4)    4 × 5 + (14 + 8) - 36 ÷ 9

        33 38

5)    (17 - 7) × 6 + 2 + 56 - 8         6)    (28 ÷ 4) + 3 + (10 - 8) × 5

    110             20

7)    12 - 5 + 6 × 3 + 20 ÷ 4          8)   36 ÷ 9 + 48 - 10 ÷ 2

        30 47

9)     10 + 8 × 90 ÷ 9 - 4         10)    8 × 3 + 70 ÷ 7 – 7

      86 27

Find all of the factors for each number. 

a. 15 - ___1, 3, 5, 15_________________________________________

b. 25 - ___ 1, 5, 25_________________________________________

c. 36- ____1, 2, 3, 4, 6, 9, 12, 18, 36__________________________

d. 27 - ____1, 3, 9, 27________________________________________

e. 18 - ___1, 2, 3, 6, 9, 18_________________________________________

 f. 12 - __1, 2, 3, 4, 6, 12__________________________________________

g. 21 ____1, 3, 7, 21___________________________________________

h. 56 ___1, 2, 4, 7, 8, 14, 28, 56_________________________________________

i. 6 - ___1, 2, 3, 6__________________________ 

j. 16 - __1, 2, 4, 8, 16___________________________ 

k. 33 - __1, 3, 11, 33___________________________ 

l. 20 - __1, 2, 4, 5, 10, 20___________________________ 

m. 17 - __1, 17___________________________ 

n. 8 - __1, 2, 4, 8___________________________

Find the Greatest Common Factor for each number pair.

1. 4 , 20 ___4________ i. 15, 20 __5_______

2. 3, 27___3_________ j. 6, 36___6_______

3. 40, 5___5________ K. 12, 24___12_______

4. 8,30___2________ L. 12, 40___4_______

5. 4 ,30 __2________ m. 2, 24___2_______

6. 8,20 ___4_______ n. 3, 30___3_______

Multiples:

List the first 7 multiples for each number.

1. 6 _    6, 12, 18, 24, 30, 36, 42____________________________________

2. 12 ___12, 24, 36, 48, 60, 72, 84  ________________________________________

3. 15 ___15, 30, 45, 60, 75, 90, 105_____________________________

4. 12 ___12, 24, 36, 48, 60, 72, 84_______________________________

5. 9 ____9, 18, 27, 36, 45, 54, 63_______________________________

6. 30 ___30, 60, 90, 120, 150, 180, 210___________________________________

7. What is the least common multiple of 6 and 9? _____________________________________

Word Problems:

1. A theater sold 3145 movie tickets at $13 for each ticket. It also sold 2056 popcorn box sets at $10 each. How much money did the theater collect altogether?

3145tickets×$13per ticket=40,885

2056sets×$10 per set=20,560

40,885+20,560= $61,445

2. Violet and Steven are going to work at a fruit company this summer break. They need to deliver an order of 4885 watermelons. If each crate can hold 16 watermelons, how many crates will they need?

4855/16 = 306

They need 306 crates

3. Ann wants to buy a really expensive violin. However, she doesn’t have that much money right now. She wants to pay for it in INSTALLMENTS. Each installment is $1025. If the violin costs $28,700. How many installments does she have to pay?

         28,700/1,025 = 28

         Ann will need to pay 28 installments of $1,025 to cover the total cost of the violin.

Angle Properties

1. The sum of angles at a point adds up to _______

1. 180°           b) 0°                 c) 360°

2. Vertically opposite angles are ________

1. Equal     b) not equal     c) sometimes equal 

3. The ___________angle of a triangle is equal to the sum of the interior opposite angles. 

1. interior   b) exterior     c) vertically opposite  

              4. Find angle FND                                                                   5.  Name the angle = WXY or YWX

                                                                

52+54=106

180-106=74

FND = 74