17 x __= 17 Which of the following can go in the blank to make the equation true? (There is more than one answer!!) A)17 B)2/2 C)1 D)3/3
What is B) 2/2 C) 1 D)3/3 ? Note: Using any of these three answers is an example of the identity property of multiplication!
Tim had to multiply 36 and 4. He said he could find the answer by using the distributive property of multiplication: Which of the following shows the correct use of the distributive property of multiplication for 36 x 4? A)(30 x 6) + (30 x 4) B)(30 + 4) x (6 + 4) C)(30 x 4) + (6 x 4) D)(30 x 4) x (6 + 4)
Joan wanted to find the perimeter of the triangle below: Which of the following expressions could Joan use to find the perimeter? (Choose 2 answers!) A)(10 + 8 ) + 6 B)(10 x 8) x 6 C)10 + (8 +6) D)10 + (8 x 6) 8 in. 6 in. 10 in.
Abby, Barbara, and Chris all got their math test back. Abby missed 12% of the questions, Barbara got 80% of the questions right. Chris missed ¼ of the questions. This is the person who got the best grade.
Andy has 20 marbles in a bag. 15 of them are red and the other five are black. Andy plans to take out a marble out of the bag, record its color, and then return the marble to the bag. He plans on doing this 100 times. According to theoretical probability, this is the number of times he should pull out a red marble out of the 100 times.
What is 75 times? Explanation: 15 of the 20 marbles are red. We could say that 15/20 of the marbles are red and then put that fraction into lowest terms, which would be ¾. That means that Andy should get a red marble ¾ of the time. If he pulls out a marble 100 times, 75 of them should be red.
Emily has a six sided die with the numbers 1 – 6 on each side. This is the probability, expressed as a fraction, that she will roll a 1 on both her first roll and on her second roll.
What is the number 1/36? Explanation: There are 6 possible outcomes on her first roll and 6 possible outcomes on her second roll. To find the total number of possible outcomes on both rolls, we need to multiply 6 by 6, which means there are 36 possible outcomes all together. Only one of the outcomes is rolling a 1 on both rolls.