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Third grade Unit 9 Math test
  • 1. For each number sentence, fill in the blank with a factor from 1 to 10 to make it true. 5 x7 <7 x ___
A) 8
B) 2
C) 1
  • 2. 4 x 3 > 4 x _____
A) 3
B) 4
C) 1
  • 3. 8 x 6 < 8 x _____
A) 7
B) 3
C) 4
  • 4. For the next set of story problems, write a number model with a letter for the unknown. Next, solve the problem and write your answer. Write your number model again with the answer to make sure that your answer makes sense.
A) 7 x 8 =M, the letter M stands for the total mass of each blue jays.
B) 7 x 80 = M, the letter M stands for the mass of 7 blue jays
  • 5. Seven blue jays have a mass of about ___________ grams.
A) 7 x 80 = 560 grams
B) 7 x 8 = 56 grams
  • 6. Solve.
A) C x 8 =240 or 240 divided by 8 = C the letter C stands for the number of California condors.
B) 8 x 240 = C or C divided by 240 = 8 C represents the weight of the California condor
  • 7. It would take about ____ California condors to equal the mass of of 80 Great Blue Herons.
A) 240 divided by 80 = 3 or 3 x 80 = 240
B) 30 x 8 = 240 or 240 divided by 8 = 30
  • 8. Solve.
A) 50 x 500 = N or N divided by 50 = 500 and N is the number of Northern Cardinals
B) 50 x N = 500 or 500 divided by 50 = and N stands for the number of Northern Cardinals.
  • 9. It would take about ____ Northern Cardinals to equal the mass of one Atlantic Puffin.
A) About 10, 50 x 10 = 500 or 500 divided by 50 = 10
B) About 2,500, 50 x 500 = 2500 or 2500 divided by 50 = 500
  • 10. Solve the problem using the break-apart strategy . You may use pictures,mental math , or number sentences.
A) 160
B) 130
C) 150
  • 11. Solve the problem using the break- apart strategy. Again, use pictures, mental math, or number sentences to help you.
A) 183
B) 180
C) 190
  • 12. Solve. Use the picture to explain Ellen's thinking.
A) All she had to do was add together 480 and 32 to get 512.
B) She broke 64 into 60 and 4. Then she multiplied 8 x 60 and 8 x4. She added the two products together to get 512.
  • 13. Solve. Use a pretend clock, picture, open number line, or other strategies.
A) 2 hours 30 minutes
B) 2 hours 35 minutes
C) 2 hours 20 minutes
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