Chapter 4 Test

First and Last Name

1. How can you use mental math to find the answer to 30 x 80? Mental math is math you can do in your head.

• Multiply 3 and 8 and add 1 zero after the product.
• Multiply 3 and 8 and add 2 zeros after the product.
• Multiply 3 and 8.

2. Solve 70 x 100.

• 70
• 700
• 7000

3. Mr. Burn’s class is taking a field trip to the planetarium. The trip will cost $39 for each student. There are 18 students in his class. Which of these would be the best estimate of how much it will cost for the class to go on the trip?

• $30 x 10 = $300
• $50 x 20 = $1000
• $40 x 20 = $800

4. Mr. Burn’s class is taking a field trip to the planetarium. The trip will cost $39 for each student. There are 18 students in his class. What is the actual cost of the field trip?

6. Use the area model to find the product of 41 x 35.

• 1435
• 1155
• 1235

7. Which multiplication equation represents the model shown below?

• 200 x 42 = 486
• 27 x 18 = 585
• 27 x 18 = 486

8. Alex has 24 marbles. Zach has 19 times as many marbles as Alex. How many marbles does Zach have?

• 4056
• 456
• 645

9. What does the word “product” mean in math?

• The answer to an addition problem
• The answer to a subtraction problem
• The answer to a mutliplication problem
• The answer to a division problem

10. What is the product of 54 and 38?

• 2252
• 5205
• 2052