3.7 316
3.8 321
3.9 265
3.10 1,352
3.11 495
3.12 3,245
3.13 48
3.14 96
3.15 $1,376 / $2,092
3.16 963
3.17 8,367
3.18 19,962
3.19 229
3.20 1.884
3.21 1,427
3.22 874
3.23 782
3.24 864
3.25
a.) 57 x 2 = 114
b.) 57 x 3 = 171
c.) 57 x 7 = 399
3.26
a.) 52
b.) 104
c.) 624
d.) 1,404
e.) 7,592
3.27 17 x 8 = 136
3.28 6 x 9 x 1 = 54
3.29 9 x 13 x 1 = 117
3.30 1 x 20 x 14 = 280
3.31 2 x 20 x 14 = 560
3.32 2 x 17 x 1 = 34
3 33 2 x 17 x 2 = 68
3.34 2 x 17 x 3 = 102
3.35 2 x 17 x 9 = 306
3.36 8 x 7 x 1 = 56
3.37 8 x 7 x 3 = 168
3.38 1 x 14 x 15 = 210
3.39 2 x 14 x 15 = 420
3.40 9 x 14 x 15 = 1,890
3.41 1,073
3.42 9,522
3.43 952
3.44 25,571
3.45 510,408
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3.46
Since Q is divisible by 15, the last
digit must be 5.
For the first two digits to add to
10, they must be 1 and 9 or 3 and
7.
For the second and third digits to
add to 14, since the third digit is
5, the second digit must be 9.
If the second digit is 9, the first
digit must be 1.
Therefore, Q = 915
a. 1
b. 9
c. 5
3.47 35 R4
3.48 74 R8
3.49 896 divided by 112 = 8
3.50 184 R26
3.51 14 R3
3.52 53 R2
3.53 42 R1
3.54 48 R3
3.55 82 R1
3.56 173 R15
3.57
a.) 52
b.) 104 divided by 52 = 2
c.) 208 divided by 52 = 4
d.) 364 divided by 52 = 7
e.) 625 divided by 52 = 12
f.) 1,976 divided by 52 = 38
3.58 18,114
3.59 16,717
3.60 234 R0
3.61 9 R0
3.62 28 R0
3.63 6 x 1 = 6
54 divided by 6 = 9
3.64 7 x 1 = 7
154 divided by 7 = 22
3.65 9 x 14 x 1 = 126
3.66 17 x 1 = 17
102 divided by 17 = 6
3.67 1,723
3.68 66 R6
3.69 3,217
3.70 14 R0
3.71 13 R0
3.72 19 R0
3.73 112 R0
3.74 a.) 4 x 6 = 24
b.) 24 x 4 = 96
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3.75
a.) 6 x 3 = 18
b.) 5 x 3 = 15
c.) 3 pencils = 3 x 6 = 18 paper
clips
18 + 4 = 22 paperclips
22 x 3 = 66 matches
d.) 2 pencils = 2 x 6 = 12 paper
clips
9 matches = 9 divided by 3 = 3
paper clips
12 + 3 = 15 paper clips
3.76
less than
12 matches = 12 divided by 3 = 4
paper clips
2 pencils = 2 x 6 = 12 paper clips
12 + 1 = 13 paper clips
3.77
more than
3 pencils = 3 x 6 = 18 paper clips
3.78
more than
2 pencils = 2 x 6 = 12 paper cips
12 + 2 = 14 paper clips
14 paper clips = 14 x 3 = 42
matches
3.79
less than
22 paper clips = 22 x 3 = 66
matches
3.80
more than
5 pencils = 5 x 6 = 30 paper clips
30 paper clips = 30 x 3 = 90
matches
90 + 2 = 92 matches
3.81
7 + 8 = 15
15 + 4 = 19
19 - 9 = 10
3.82
47 - 9 = 38
38 + 6 = 44
44 - 8 = 36
36 + 3 = 39
39 - 7 = 32
3.83
11 + 7 = 18
18 - 9 = 9
9 + 6 = 15
15 - 4 = 11
11 + 9 = 20
3.84 28 + 31 = 59
3.85 46 + 12 = 58
58 + 8 = 66
3.86
32 - 5 = 27
27 + 7 = 34
34 + 8 = 42
42 - 6 = 36
3.87 53 + 25 = 78
78 - 9 = 69
3.88 320 x 5 = 1,600
3.89
152 x 7 = 1,064 for two
motorcycles
1,064 divided by 2 = 532
3.90 a.) 49 x 5 = 245
b.) 245 x 7 = 1,715
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3.91
a.) 2 red chips = 2 x 4 = 8 white
chips
1 blue chip = 7 white chips
8 + 7 = 15 white chips
b.) 3 red chips = 3 x 4 = 12 white
chips
2 blue chips = 2 x 7 = 14 white
chips
12 + 14 = 26 white chips
3.92
a.) 1 purple chip = 2 x 6 = 12
white chips
b.) 3 purple chips = 3 x 2 = 6
orange chips = 6 x 6 = 36 white
chips
c.) 24 white chips = 24 divided
by 6 = 4 orange chips
d.) 38 orange chips = 38 divided
by 2 = 19 purple chips
3.93 5 x 7 x 3 = 105
SELF TEST 3
3.01 a.) 9 x 7 = 63
b.) 63 x 2 x 2 = 252
3.02 3,323 + 1,621 = 4,944
8,474 - 4,944 = 3,530
3.03 234 - 186 = 48
3.04 287 R16
3.05 4,941
3.06 22 divided by 2 = 11 horses
11 x 3 = 33 water bottles
3.07 a.) 5 x 47 = 235
b.) 235 x 9 = 2,115
3.08 2,242 divided by 118 = 19
3.09 9 x 23 = 207
3.010
a.) 12 pencils = 2 x 2 = 4 rulers
4 rulers = 4 x 2 = 8 erasers
b.) 2 erasers = 1 ruler
1 ruler = 6 divided by 2 = 3
pencils
c.) 1 ruler = 6 divided by 2 = 3
pencils
4 erasers = 4 divided by 2 = 2
rulers
2 rulers = 6 pencils
3 + 6 = 9 pencils
3.011
The factors of 35 are 1, 5, 7, and
35. The prime factors are 5 and 7,
of which 7 is the largest.
3.012
The factors of 38 are 1, 2, 19, and
38. The prime factors are 2 and
19, of which 19 is the largest.
3.013 2
3.014
The factors of 12 are 1, 2, 3, 4, 6,
and 12. The prime factors are 2
and 3, of which 2 is the smallest.
3.015 3
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