Download Chapter 2 Review

Name: _____________________________________________________
Chapter 2 Review
estimate
prime number
product
Vocabulary
WORD BANK
factor
rounding
reasonable
greatest common factor
product
least common factor
multiple
composite number
quotient
Choose the correct word.
1. You can ___________________________ to check that an answer is
reasonable.
2. 4 is a ______________ of 12, and 12 is a __________________ of 4.
3. When one number is multiplied by another, the result is called a
_______________________.
4. A number that has only 2 different factors is a __________________________.
5. The _______________________________________ of two or more numbers is
less than all other common multiples.
Find each sum or difference. Then use rounding to check that your answers are
reasonable. Round each number to its greatest place value.
6. 62 + 23
=
Sum: _______________________
Estimated Value:______________
7. 146 – 48 =
Difference:_____________________
Estimated Value:_________________
8. 537 + 219 =
Sum:__________________________
Estimated Value: ________________
9. 806 – 274 =
Difference: _____________________
Estimated Value:_________________
Find each product. Then estimate to check that your answers are reasonable.
10. 35 x 3 =
Product: _______________________
Estimated Value:_________________
11. 253 x 4
Product:________________________
Estimated Value:_________________
Complete. Then estimate to check that your answers are reasonable.
12. 7,036 + 1,598 =
Sum: _____________________
Estimated Value:____________
13. 479 – 247 =
Difference: ________________
Estimated Value:____________
14. 3,862 – 2,973 =
Difference:________________
Estimated Value:____________
15. 46 x 5 =
Product: __________________
Estimated Value: ___________
16. 63 x 4 =
Product:__________________
Estimated Value:____________
17. 32 x 3 =
Product: __________________
Estimated Value: ___________
18. 104 x 4 =
Product:__________________
Estimated Value:____________
Find the factors of each number.
19. 16 -
___________________________________________________
20. 24 -
___________________________________________________
Complete.
21. Find the common factors of 16 and 24. ________________________
22. Find the greatest common factor of 16 and 24. __________________
Find the first eight multiples of each number.
23. 4 - ______ , ______ , ______ , ______ , ______ , ______ , ______ , ______
24. 6 - ______ , ______ , ______ , ______ , ______ , ______ , ______ , ______
Complete.
25. Find a common multiple of 4 and 6. __________
26. The least common multiple of 4 and 6 is ___________.
Find the factors of each number. Then list the prime numbers and composite
numbers.
17
27.
24
9
27
16
11
Prime Numbers: ________________________________
Composite Numbers: _____________________________
Solve.
28. Joey has 38 oranges. He packs them into 4 crates. How many oranges does
he have left over?
29. There are 158 erasers, 235 pencils, and 369 pens in a stationery shop. About
how many erasers, pencils, and pens are there altogether?
31. A tourist agency is expecting 65 visitors in a week. Each of the agency’s cars
can carry 4 passengers. How many cars will be needed for all the visitors?