What is the first multiple of 28?
28
56
67
72
of 10
Multiples of 28
Multiples of 28
Multiples of 28 refer to the numbers obtained by multiplying 28 by various integers. In mathematics, a multiple is a product of a given number and an integer. For instance, 28 multiplied by 1, 2, 3, and so on results in its multiples: 28, 56, 84, etc. These numbers share common divisors and factors, making them integral to understanding number theory and multiplication principles. Identifying multiples of 28 helps in solving problems related to divisors and factors in integer mathematics.
What are Multiples of 28?
Multiples of 28 are the numbers that result from multiplying 28 by any whole number. They follow the pattern 28, 56, 84, 112, and so on. In general, the nth multiple of 28 can be represented as 28n, where n is a positive integer.
For example, 84, 140, 196 and 252 are all multiples of 28, 501 is not a multiple of 28 for the following reasons:
| Number | Calculation | Reason | Remainder |
|---|---|---|---|
| 84 | 84÷28 = 3 | 84 is a multiple of 28 because it divides evenly. | 0 |
| 140 | 140÷28 = 5 | 140 is a multiple of 28 because it divides evenly. | 0 |
| 196 | 196÷28 = 7 | 196 is a multiple of 28 because it divides evenly. | 0 |
| 252 | 252÷28 =9 | 252 is a multiple of 28 because it divides evenly. | 0 |
| 501 | 501÷28 = 17 | 501 is not a multiple of 28 because it does not divide evenly. | 25 |
List of First 100 Multiples of 28 with Remainders
| Number | Reason | Remainder |
|---|---|---|
| 28 | 28 is a multiple of 28 because 28 × 1 = 28 | 0 |
| 56 | 56 is a multiple of 28 because 28 × 2 = 56 | 0 |
| 84 | 84 is a multiple of 28 because 28 × 3 = 84 | 0 |
| 112 | 112 is a multiple of 28 because 28 × 4 = 112 | 0 |
| 140 | 140 is a multiple of 28 because 28 × 5 = 140 | 0 |
| 168 | 168 is a multiple of 28 because 28 × 6 = 168 | 0 |
| 196 | 196 is a multiple of 28 because 28 × 7 = 196 | 0 |
| 224 | 224 is a multiple of 28 because 28 × 8 = 224 | 0 |
| 252 | 252 is a multiple of 28 because 28 × 9 = 252 | 0 |
| 280 | 280 is a multiple of 28 because 28 × 10 = 280 | 0 |
| 308 | 308 is a multiple of 28 because 28 × 11 = 308 | 0 |
| 336 | 336 is a multiple of 28 because 28 × 12 = 336 | 0 |
| 364 | 364 is a multiple of 28 because 28 × 13 = 364 | 0 |
| 392 | 392 is a multiple of 28 because 28 × 14 = 392 | 0 |
| 420 | 420 is a multiple of 28 because 28 × 15 = 420 | 0 |
| 448 | 448 is a multiple of 28 because 28 × 16 = 448 | 0 |
| 476 | 476 is a multiple of 28 because 28 × 17 = 476 | 0 |
| 504 | 504 is a multiple of 28 because 28 × 18 = 504 | 0 |
| 532 | 532 is a multiple of 28 because 28 × 19 = 532 | 0 |
| 560 | 560 is a multiple of 28 because 28 × 20 = 560 | 0 |
| 588 | 588 is a multiple of 28 because 28 × 21 = 588 | 0 |
| 616 | 616 is a multiple of 28 because 28 × 22 = 616 | 0 |
| 644 | 644 is a multiple of 28 because 28 × 23 = 644 | 0 |
| 672 | 672 is a multiple of 28 because 28 × 24 = 672 | 0 |
| 700 | 700 is a multiple of 28 because 28 × 25 = 700 | 0 |
| 728 | 728 is a multiple of 28 because 28 × 26 = 728 | 0 |
| 756 | 756 is a multiple of 28 because 28 × 27 = 756 | 0 |
| 784 | 784 is a multiple of 28 because 28 × 28 = 784 | 0 |
| 812 | 812 is a multiple of 28 because 28 × 29 = 812 | 0 |
| 840 | 840 is a multiple of 28 because 28 × 30 = 840 | 0 |
| 868 | 868 is a multiple of 28 because 28 × 31 = 868 | 0 |
| 896 | 896 is a multiple of 28 because 28 × 32 = 896 | 0 |
| 924 | 924 is a multiple of 28 because 28 × 33 = 924 | 0 |
| 952 | 952 is a multiple of 28 because 28 × 34 = 952 | 0 |
| 980 | 980 is a multiple of 28 because 28 × 35 = 980 | 0 |
| 1008 | 1008 is a multiple of 28 because 28 × 36 = 1008 | 0 |
| 1036 | 1036 is a multiple of 28 because 28 × 37 = 1036 | 0 |
| 1064 | 1064 is a multiple of 28 because 28 × 38 = 1064 | 0 |
| 1092 | 1092 is a multiple of 28 because 28 × 39 = 1092 | 0 |
| 1120 | 1120 is a multiple of 28 because 28 × 40 = 1120 | 0 |
| 1148 | 1148 is a multiple of 28 because 28 × 41 = 1148 | 0 |
| 1176 | 1176 is a multiple of 28 because 28 × 42 = 1176 | 0 |
| 1204 | 1204 is a multiple of 28 because 28 × 43 = 1204 | 0 |
| 1232 | 1232 is a multiple of 28 because 28 × 44 = 1232 | 0 |
| 1260 | 1260 is a multiple of 28 because 28 × 45 = 1260 | 0 |
| 1288 | 1288 is a multiple of 28 because 28 × 46 = 1288 | 0 |
| 1316 | 1316 is a multiple of 28 because 28 × 47 = 1316 | 0 |
| 1344 | 1344 is a multiple of 28 because 28 × 48 = 1344 | 0 |
| 1372 | 1372 is a multiple of 28 because 28 × 49 = 1372 | 0 |
| 1400 | 1400 is a multiple of 28 because 28 × 50 = 1400 | 0 |
| 1428 | 1428 is a multiple of 28 because 28 × 51 = 1428 | 0 |
| 1456 | 1456 is a multiple of 28 because 28 × 52 = 1456 | 0 |
| 1484 | 1484 is a multiple of 28 because 28 × 53 = 1484 | 0 |
| 1512 | 1512 is a multiple of 28 because 28 × 54 = 1512 | 0 |
| 1540 | 1540 is a multiple of 28 because 28 × 55 = 1540 | 0 |
| 1568 | 1568 is a multiple of 28 because 28 × 56 = 1568 | 0 |
| 1596 | 1596 is a multiple of 28 because 28 × 57 = 1596 | 0 |
| 1624 | 1624 is a multiple of 28 because 28 × 58 = 1624 | 0 |
| 1652 | 1652 is a multiple of 28 because 28 × 59 = 1652 | 0 |
| 1680 | 1680 is a multiple of 28 because 28 × 60 = 1680 | 0 |
| 1708 | 1708 is a multiple of 28 because 28 × 61 = 1708 | 0 |
| 1736 | 1736 is a multiple of 28 because 28 × 62 = 1736 | 0 |
| 1764 | 1764 is a multiple of 28 because 28 × 63 = 1764 | 0 |
| 1792 | 1792 is a multiple of 28 because 28 × 64 = 1792 | 0 |
| 1820 | 1820 is a multiple of 28 because 28 × 65 = 1820 | 0 |
| 1848 | 1848 is a multiple of 28 because 28 × 66 = 1848 | 0 |
| 1876 | 1876 is a multiple of 28 because 28 × 67 = 1876 | 0 |
| 1904 | 1904 is a multiple of 28 because 28 × 68 = 1904 | 0 |
| 1932 | 1932 is a multiple of 28 because 28 × 69 = 1932 | 0 |
| 1960 | 1960 is a multiple of 28 because 28 × 70 = 1960 | 0 |
| 1988 | 1988 is a multiple of 28 because 28 × 71 = 1988 | 0 |
| 2016 | 2016 is a multiple of 28 because 28 × 72 = 2016 | 0 |
| 2044 | 2044 is a multiple of 28 because 28 × 73 = 2044 | 0 |
| 2072 | 2072 is a multiple of 28 because 28 × 74 = 2072 | 0 |
| 2100 | 2100 is a multiple of 28 because 28 × 75 = 2100 | 0 |
| 2128 | 2128 is a multiple of 28 because 28 × 76 = 2128 | 0 |
| 2156 | 2156 is a multiple of 28 because 28 × 77 = 2156 | 0 |
| 2184 | 2184 is a multiple of 28 because 28 × 78 = 2184 | 0 |
| 2212 | 2212 is a multiple of 28 because 28 × 79 = 2212 | 0 |
| 2240 | 2240 is a multiple of 28 because 28 × 80 = 2240 | 0 |
| 2268 | 2268 is a multiple of 28 because 28 × 81 = 2268 | 0 |
| 2296 | 2296 is a multiple of 28 because 28 × 82 = 2296 | 0 |
| 2324 | 2324 is a multiple of 28 because 28 × 83 = 2324 | 0 |
| 2352 | 2352 is a multiple of 28 because 28 × 84 = 2352 | 0 |
| 2380 | 2380 is a multiple of 28 because 28 × 85 = 2380 | 0 |
| 2408 | 2408 is a multiple of 28 because 28 × 86 = 2408 | 0 |
| 2436 | 2436 is a multiple of 28 because 28 × 87 = 2436 | 0 |
| 2464 | 2464 is a multiple of 28 because 28 × 88 = 2464 | 0 |
| 2492 | 2492 is a multiple of 28 because 28 × 89 = 2492 | 0 |
| 2520 | 2520 is a multiple of 28 because 28 × 90 = 2520 | 0 |
| 2548 | 2548 is a multiple of 28 because 28 × 91 = 2548 | 0 |
| 2576 | 2576 is a multiple of 28 because 28 × 92 = 2576 | 0 |
| 2604 | 2604 is a multiple of 28 because 28 × 93 = 2604 | 0 |
| 2632 | 2632 is a multiple of 28 because 28 × 94 = 2632 | 0 |
| 2660 | 2660 is a multiple of 28 because 28 × 95 = 2660 | 0 |
| 2688 | 2688 is a multiple of 28 because 28 × 96 = 2688 | 0 |
| 2716 | 2716 is a multiple of 28 because 28 × 97 = 2716 | 0 |
| 2744 | 2744 is a multiple of 28 because 28 × 98 = 2744 | 0 |
| 2772 | 2772 is a multiple of 28 because 28 × 99 = 2772 | 0 |
| 2800 | 2800 is a multiple of 28 because 28 × 100 = 2800 | 0 |
Read More About Multiples of 28
Important Notes
Step 1: Definition of Multiples
Multiples of a number are the products of that number and any integer. For example, the multiples of 28 are found by multiplying 28 by integers such as 1, 2, 3, etc.
Step 2: First Ten Multiples of 28
The first ten multiples of 28 are:
- 28×1 = 28
- 28×2 = 56
- 28×3 = 84
- 28×4 = 112
- 28×5 = 140
- 28×6 = 168
- 28×7 = 196
- 28×8 = 224
- 28×9 = 252
- 28×10 = 280
Step 3: Common Characteristics
- Even Numbers: All multiples of 28 are even because 28 is an even number.
- Divisibility by 4 and 7: Since 28 is divisible by both 4 and 7, all multiples of 28 are also divisible by 4 and 7.
Step 4: Least Common Multiple (LCM)
The LCM of two numbers is the smallest number that is a multiple of both. For instance, the LCM of 28 and another number can be found using the prime factorization method.
Step 5: Applications
- Mathematics Problems: Multiples are useful in solving problems involving patterns, sequences, and factors.
- Real-Life Scenarios: Understanding multiples can help in scheduling events, distributing items evenly, and more.
Examples on Multiples of 28
Example 1: Finding the Least Common Multiple (LCM)
Problem: Find the LCM of 28 and 35.
List the prime factors of each number:
- 28 = 2 × 2 × 7
- 35 = 5 × 7
Identify the highest power of each prime factor:
- Prime factors: 2, 5, 7
- Highest powers: 222², 515¹, 717¹
Multiply these highest powers:
- LCM = 22²×5¹×7¹
- LCM = 4 × 5 × 7 = 140
The LCM of 28 and 35 is 140.
Example 2: Word Problem Involving Multiples
Problem: Sarah is organizing gift bags. Each bag must contain either 28 or 56 candies. If she has 280 candies, how many bags of each type can she make?
Determine the multiples:
- 28 × 10 = 280 (for bags containing 28 candies)
- 56 × 5 = 280 (for bags containing 56 candies)
Possible combinations:
- She can make 10 bags with 28 candies each, or
- She can make 5 bags with 56 candies each.
Sarah can make 10 bags with 28 candies each or 5 bags with 56 candies each.
Example 3: Practical Application in Scheduling
Problem: A train runs every 28 minutes. If the first train leaves at 6:00 AM, at what times will the train depart within the next 4 hours?
List the multiples of 28 within 240 minutes (4 hours):
- 28, 56, 84, 112, 140, 168, 196, 224
Convert these to time:
- 6:00 AM + 28 minutes = 6:28 AM
- 6:00 AM + 56 minutes = 6:56 AM
- 6:00 AM + 84 minutes = 7:24 AM
- 6:00 AM + 112 minutes = 7:52 AM
- 6:00 AM + 140 minutes = 8:20 AM
- 6:00 AM + 168 minutes = 8:48 AM
- 6:00 AM + 196 minutes = 9:16 AM
- 6:00 AM + 224 minutes = 9:44 AM
The train will depart at 6:28 AM, 6:56 AM, 7:24 AM, 7:52 AM, 8:20 AM, 8:48 AM, 9:16 AM, and 9:44 AM.
Example 4: Divisibility Check
Problem: Is 196 a multiple of 28?
Divide 196 by 28:
- 196÷28 = 7
Since the quotient is a whole number, 196 is a multiple of 28.
Yes, 196 is a multiple of 28.
Example 5: Construction Project
Problem: A contractor needs to purchase packs of tiles, with each pack containing 28 tiles. If the project requires 420 tiles, how many packs are needed?
Divide the total number of tiles by the number of tiles per pack:
420÷28 = 15
The contractor needs 15 packs of tiles.
FAQs
What are multiples of 28?
Multiples of 28 are numbers that can be expressed as 28 times an integer, such as 28, 56, 84, 112, and so on.
Is 140 a multiple of 28?
Yes, 140 is a multiple of 28 because 28 times 5 equals 140.
How can I find the 10th multiple of 28?
To find the 10th multiple of 28, multiply 28 by 10, which equals 280.
Are all multiples of 28 even numbers?
Yes, all multiples of 28 are even numbers because 28 itself is an even number.
Can a multiple of 28 be a prime number?
No, a multiple of 28 cannot be a prime number because it has factors other than 1 and itself.
What is the least common multiple (LCM) of 28 and 42?
The least common multiple of 28 and 42 is 84.
Are 56 and 84 multiples of 28?
Yes, both 56 and 84 are multiples of 28 because 28 times 2 equals 56 and 28 times 3 equals 84.
How do I determine if a number is a multiple of 28?
To determine if a number is a multiple of 28, divide the number by 28. If the result is an integer, it is a multiple of 28.
What are the first five multiples of 28?
The first five multiples of 28 are 28, 56, 84, 112, and 140.
Is 280 the greatest multiple of 28 under 300?
Yes, 280 is the greatest multiple of 28 under 300 because 28 times 10 equals 280 and 28 times 11 equals 308, which is over 300.
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Practice Test
Which of the following is a multiple of 28?
112
110
120
130
of 10
What is the second multiple of 28?
54
56
58
60
of 10
Identify the multiple of 28 among the following.
90
84
78
96
of 10
What is the third multiple of 28?
80
84
88
92
of 10
Which number is not a multiple of 28?
140
168
196
180
of 10
What is the fourth multiple of 28?
108
112
116
120
of 10
What is the fifth multiple of 28?
136
140
144
146
of 10
Identify the multiple of 28 among the following numbers.
154
156
158
165
of 10
What is the sixth multiple of 28?
164
168
172
176
of 10