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Let's try another one!
Use divisibility rules to solve the following problems. Give the reason why your answer in each problem yes or no.

1. Kristine has collection of 672 stamps. She wants to place the stamps in 2 envelopes. Can she place the same number of stamps in each envelope?

2. The number of books in Nicole's collection is divesible by 2, 5 and 10. She has more than 11 books and fewer than 25 books. How many books does Nicole have?

3. What is the smallest two digit number divisible by 3 and 6?

4. What is the largest two digit numbers divisible by 3?

5. What is the smallest two digit number divisible by 3 and 9?

Sagot :

Answer:

1. YES, because

672 ÷ 2 is 336, so she can place the same number of stamps in each envelope.

2. 20

3. 12

4. 99

5. 18

Step-by-step explanation:

1. 672 ÷ 2 = 336

2. 20 is more than 11, 20 is less than 25, so Nicole has 20 books.

3. 12 ÷ 3 = 4 and 12 ÷ 6 = 2

4. 99 ÷ 3 = 33

5. 18 ÷ 3 = 6

18 ÷ 9 = 2