Flash Cards 6 and Set H Speed Drill 6, page 63. Keys to Finding Prime Numbers

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1 6 Flash Cards 6 and Set H Speed Drill 6, page 63 Keys to Finding Prime Numbers You used four keys to find common factors and to reduce fractions. The same four keys will help you find prime numbers to 70. Any whole number up to 70 that does not have, 3,, or 7 as a factor is a prime number. If one of these four keys is a factor, it is a composite number. Is 49 a prime number? Try. No, is not a factor. Try 3. No. Try. No. Try 7. Yes. Since 7 is a factor, 49 is not a prime number. Put P for prime or C for composite. If you write C, also write a key factor that makes it composite. The first three are done for you.. a. 3 P b. C c. 60 C,3, d. 7. a. b. c. 67 d a. 9 b. 39 c. 47 d. 4 We Remember Write the answers. 4. a. 8 squared = b. square root of 49 = 0

2 Lesson 6 Follow the directions.. Name the angle. O 6. Name the vertex. 7. Measure the angle. 8. Draw a congruent angle. Label it LMN. P Q 9. OPQ is a/an acute, right, obtuse angle. Find the LCM.. a. The LCM of 7 and 9 is. b. The LCM of 4 and 6 is. Write the first six multiples of 6.. Skill Builders + - x. a. 9 ) b. 4 ) 4 0 c. 9 ) 7 6 d. 3 ) 4 7 e a. 4 7 b c. 6 d. e

3 Lesson 6 4. Seven feet of snow fell on Buffalo in December. Another feet fell in January. How many feet of snow fell during this period? My Work Space. At 6:0 Mr. Noonan finished shoveling out his and Old Man Reuben s driveway. At 7:4 the snowplow came by and pushed a ridge of street snow up onto the clean driveways. How long did Mr. Noonan get to rest before he had to shovel out the street snow? My Work Space Complete the chart. m and cm m cm 6. m 6 cm 6 cm cm Measure and round to the nearest fourth-inch. 8. in 9. in Round to the nearest whole number. Geometry is the study of points and the shapes they form. If you look around carefully you will see that God used many different shapes in creation. 0. a. 4.3 b. 7.9 c..6 d. 4.

4 Lesson 6 Answer the questions about Set T. Set T = Things in Shateela s neighborhood. Is a tree a member of Set T?. Is a sidewalk a member of Set T? 3. Is a potato field a member of Set T? 4. Name four more things that could be members of Set T. Simplify these expressions.. a. (4 3) + 4 (4 ) b. 3 + (9 ) ( + 4) 3 c Mental Math? a. 0 = b = c. 7 + = 0 7. a = 0 b = c. 0 + = 0 Solve the prime number exercises. 8. The key factors for finding prime numbers are the same as the first four prime numbers. List them 9. List the next four prime numbers. 3

5 7 Flash Cards and Set L Speed Drill 7, page 64 One-Half and Tenths and name the same amount Study the number lines above.. Write two other names for.. Write two other names for.. Write these fractions and mixed numbers as decimals. 3. a. b. 6 c. 4. a. b. c. 4 4

6 Lesson 7 We Remember Write P for prime or C for composite. If you write C, write a key factor of the number.. a. b. 4 c There are prime numbers less than 0. How many are there between 0 and 70? (Look back at page 4 to help you.) Write < or > a b. - c d Measure to the eighth-inch. 8. in Skill Builders + - x a b. 7 ) $ c. ) d. 6 ) $ a. 7 b. 7 3 c. 4 0 d. 6 e

7 Lesson 7. Little Darren and Kenneth built a snow fort with snow bricks made from one of Mom s bread pans. Together, the boys built a wall that was 8 bricks long and 6 bricks tall. How many snow bricks did the boys make? My Work Space. Each brick was 4 inches high. How many inches high were the 6 bricks of the fort? How many feet was this? 3. The snow fell at a rate of 4 cm per hour. How much snow fell in four hours? My Work Space This is the same as meters. Remember, you must move a decimal point to change cm to m. Solve. 9 hr min 4. a. 3 hr min b. 7 hr min hr 30 min Follow the directions.. Draw a congruent angle and label it GHI. D E F 6

8 Mental Math?... Lesson 7 6. a = b = c = Round to the place value of the underlined number. 7. a. 69 b.,93 c. 6,9 Find the average. 8. Shateela kept track of the birds that came to the bird feeder for three days. One day there were 8, the next day 43, and the third day 34. What was the average number of birds that came to the feeder each day? Add Divide Follow the instructions using the number,83, Write the digit in the millions place. 0. Write the digit in the ten millions place.. Write the digit in the thousands place.. Write the digit in the hundreds place. Round each number to estimate. Hurricanes can cause the water on the beach to rise 4 feet in just a few minutes. This can cause some very quick and dangerous floods. 3. a. estimate b. estimate Write these fractions and mixed numbers as decimals. 4. a. 4 b. 8 c. 6 7