| Order of Operations | ||
| #1 | Evaluate the express : (8+3)2 - 3 + 8 |
The Answer is: 126 |
| #2 | Evaluate the expression: 100 - 80 ÷ 4 + 3 |
The answer is: 83 |
| #3 | Evaluate the expression: 6 + 7 × 9 |
The answer is 69 |
| #4 | Evaluate the expression: 52 × 4 ÷ 2 - (8-3) |
The answer is: 45 |
| #5 | Here is how a student simplified an expression. Is this correct? If not, where did the student amek a mistake? 2 × (12-3)2 +7 2 × (12-9) + 7 2 × 3 + 7 6 + 7 13
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Answer: The student did not subtract 12 - 3 before squaring. It should look like this: 2 × (12-3)2 + 7 2 × 92 + 7 2 × 81 + 7 162 + 7 169 |
| Decimals | ||
| #1 | Evaluate the following expression: 7.68 + 2.24 |
Answer is: 9.92 |
| #2 | Evaluate the expression: 40.4 - 5 |
The answer is: 35.4 |
| #3 | Evaluate the expression: 8.4 × 0.35 |
The answer is: 2.940 |
| #4 | Evaluate the expression: 6.00 ÷ 0.8 |
The answer is: 7.5 |
| #5 | Evaluate the expression: 281.06 ÷ 4.6 |
The answer is: 61.1 |
| Fractions | ||
| #1 | Evaluate the expression: 3/10 + 1/5 |
The answer is: 1/2 |
| #2 | Evaluate the expression: 5 1/2 - 7/10 |
The answer is: 4 4/5 |
| #3 | Evaluate the Expression: 2 1/10 × 3 1/6 |
The Answer is: 6 39/60 |
| #4 | Evaluate the Expression: 2/5 ÷ 7/8 |
The Answer is: 16/35 |
| #5 | Evaluate the Expression: 7/8 ÷ 5 |
The Answer is: 7/40 |
| Multiples and Factors | ||
| #1 | List all the factors of 64 |
The Answer is: 1,2,4,8,16,32,64 |
| #2 | List the first five Multiples of 16. |
Answer: 16, 32, 48, 64, 80 |
| #3 | What is the GCF of 84 and 120? |
Answer: 84 - 1,2,3,4,6,7,12,14,21,28,42,84 120 - 1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,120 GCF is 12 |
| #4 | What is the LCM of 5, 6, and 10? |
Answer: 5- 5,10,15,20,25,30,35,40,45,50 6, - 6,12,18,24,30,36,42,48 10 - 10,20,30,40,50 LCM is 30 |
| #5 | In a parade, 18 boys and 24 girls are merching in seperate rows. Each rwo requires the same number of students. What is the greatest number of students that can be in a row? |
Answer: Look for the GCF 18 - 1,2,3,6,9,18 24 - 1,2,3,4,6,8,12,24 The GCF is 6. Therefore the greatest number of students that can be in a row is 6. |
| Area and Perimeter | ||||
| #1 | What is the perimeter of a rectangle with width of 25 m and a heigth of 12 m? |
Answer: 74 m |
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| #2 | What is the area of a a Parallelogram with base of 15 yd and a height of 12 yd? |
Answer: Area is 180 yd2
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| #3 | What is the area of a triangle witha base of 5 in and a heigth of 3 in?
A = 1/2 bh |
Answer: 7.5 in22 |
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| #4 | Find the area of a triangle owith heigth of 27 cm and a base of 25 cm.
A = 1/2 bh |
Answer:
A = 337.5 cm |
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| #5 | Find the circumference of a circle with a radius of 5 in.
C = 2∏ r |
Answer: 31.4 in |
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| Final Question | |
Piano classes start at 9 am and are given every 60 minutes. Violin classes also start at 9 am and are given every 45 minutes. What is the next time at which a piano lesson and a violin lesson will start at the same time? |
Answer: 12 noon |