MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.Find all the factors of the number.
1)30A)1, 2, 3, 5, 6, 10, 15, 30B)1, 2, 3, 5, 6, 10, 20, 30C)5, 6, 10, 30D)1, 5, 6, 301)2)28A)2, 7, 14, 28B)1, 2, 4, 7, 14, 28C)1, 2, 7, 14, 28D)1, 2, 4, 7, 8, 14, 282)3)36A)2, 4, 6, 12, 18, 36B)1, 2, 4, 6, 12, 18, 36C)1, 2, 3, 4, 6, 9, 12, 18, 36D)1, 2, 3, 4, 5, 6, 9, 10, 12, 18, 363)4)45A)1, 3, 5, 15, 45B)1, 2, 3, 5, 9, 15, 30, 45C)1, 3, 5, 9, 15, 45D)1, 3, 5, 9, 15, 30, 454)5)56A)1, 2, 3, 4, 7, 8, 14, 18, 28, 56B)1, 2, 4, 7, 8, 14, 18, 28, 56C)2, 4, 7, 8, 14, 28D)1, 2, 4, 7, 8, 14, 28, 565)6)63A)1, 3, 7, 9, 21, 63B)3, 5, 7, 9, 11, 21, 63C)1, 3, 5, 7, 9, 11, 21, 63D)1, 2, 3, 7, 9, 21, 36, 636)7)66A)1, 2, 3, 4, 11, 16, 22, 33, 66B)1, 3, 11, 22, 33, 66C)1, 2, 3, 9, 11, 22, 33, 66D)1, 2, 3, 6, 11, 22, 33, 667)8)70A)1, 2, 5, 7, 35, 70B)1, 2, 3, 5, 7, 9, 15, 35, 70C)1, 3, 5, 7, 9, 15, 20, 35, 70D)1, 2, 5, 7, 10, 14, 35, 708)9)72A)1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 18, 24, 36, 72B)1, 2, 3, 4, 6, 8, 9, 12, 24, 36, 72C)1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72D)1, 2, 3, 4, 6, 9, 12, 14, 18, 24, 36, 729)10)84A)1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84B)1, 2, 3, 4, 6, 7, 12, 14, 21, 42, 84C)1, 2, 3, 4, 7, 14, 21, 28, 42, 84D)1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 14, 21, 28, 42, 8410)
Indicate whether the number is prime or composite.
11)42A)PrimeB)Composite11)12)73A)PrimeB)Composite12)1
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13)100A)CompositeB)Prime13)14)11A)CompositeB)Prime14)15)14A)PrimeB)Composite15)16)89A)PrimeB)Composite16)17)56A)CompositeB)Prime17)
Write the prime factorization of the number.
18)165A)52
×
3B)15
×
11C)3
×
5
×
11D)32
×
1118)19)511A)72
×
73B)7
×
73C)72D)7
×
7119)20)90A)22
×
32
×
5B)10
×
32C)2
×
32
×
5D)2
×
3
×
520)21)700A)22
×
52
×
7B)24
×
7C)23
×
52
×
7D)54
×
721)22)45A)9
×
5B)9
×
3C)52D)32
×
522)23)700A)23
×
52
×
7B)22
×
52
×
7C)54
×
7D)24
×
723)24)4725A)3
×
54
×
7B)34
×
5
×
7C)33
×
52
×
7D)33
×
53
×
724)25)231A)72
×
3B)21
×
11C)32
×
11D)3
×
7
×
1125)26)126A)22
×
32
×
7B)2
×
3
×
7C)14
×
32D)2
×
32
×
726)27)177A)32B)3
×
57C)3
×
59D)32
×
5927)2
Find the LCM.
28)3 and 15A)45B)3C)5D)1528)29)12 and 5A)17B)12C)30D)6029)30)15 and 20A)60B)20C)300D)3530)31)18 and 45A)45B)810C)63D)9031)32)7 and 63A)441B)7C)63D)7032)33)120 and 90A)720B)1080C)360D)3033)34)48, 162, and 3A)1296B)648C)432D)32434)35)30, 20, and 50A)150B)60C)300D)10035)36)6, 18, and 30A)15B)90C)18D)54036)37)2, 8, and 10A)12B)80C)40D)2037)
Solve the problem.
38)The government holds a presidential election in every year that is a multiple of 4. Was there anelection in 1984? Explain.A)No, there was not an election in 1984, because 1984 is not a multiple of 4.B)Yes, there was an election in 1984, because 1984 is a multiple of 4.38)39)The government holds a presidential election in every year that is a multiple of 4. Was there anelection in 1971? Explain.A)No, there was not an election in 1971, because 1971 is not a multiple of 4.B)Yes, there was an election in 1971, because 1971 is a multiple of 4.39)40)What are the dimensions of the smallest square that you can make using 12

in. by 16

in.rectangular tiles?A)24

in.
×
24

in.B)96

in.
×
96

in.C)40

in.
×
40

in.D)48

in.
×
48

in.40)41)A choreographer of a musical wants to hire enough dancers so that he can arrange them in groupsof exactly 9, 12, and 18 with no dancers left out. What is the least number of dancers he can hire?A)216B)36C)72D)1841)3
42)The manager at a local pizza place wants to cut and package pepperoni slices. Each mediumpizza has 5 slices of pepperoni and each large pizza takes 8 slices of pepperoni. What is thesmallest number of slices in each package so there will be none left when making any combinationof large or medium pizzas.A)40B)100C)80D)2042)43)Two vending machines sit in a cafeteria. A soda machine is restocked every 9 days, and a snackmachine is restocked every 4 days. If they were both restocked today, in how many days will theyagain both be restocked?A)13B)360C)72D)3643)44)A record producer decided to have a special promotion at a local concert. Every sixth personthrough the gate was to receive a free compact disc. If you were person number 600 through thegate, would you get a free CD? Explain.A)Yes, because 600 is a multiple of six.B)No, because 600 is not a multiple of six.44)
Identify a fraction or mixed number that represents the shaded part of the figure.
45)A)34B)14C)3D)1345)46)A)23B)112C)212D)2546)4
47)A)16B)15C)5D)5647)48)A)123B)35C)58D)3848)49)A)58B)35C)38D)12349)50)A)5B)15C)56D)12350)5