Estimation
What is the best estimate for 26 x 6?
150
What is 22 x 4?
88
Compare the fractions 4/6 and 3/4.
4/6 < 3/4
What is the best estimate for 49 x 31? Why?
1,500 because 50 x 31 = 1,500.
What is 249 x 4?
996
Rewrite 1/3 and 1/2 with a common denominator.
1/3 = 2/6, 1/2 = 3/6
Explain how to estimate the area of a rectangle that is 24 feet wide and 49 feet long.
Round 24 to 20 and 49 to 50 to get 20 x 50 = 1,000.
What is 87 x 14?
1,218
Name two fractions that are equivalent to 2/3.
4/6, 8/12, 6/9
What is the best estimate for 296 x 322?
90,000
What is 26 x 38?
988
Fill in the blank: 0.50 ___ 0.05.
0.50 > 0.05
Create an estimation problem and explain how you would solve it.
Answers will vary.
What is 642 x 5?
3,210
Compare 4/10 and 35/100 and explain your reasoning.
4/10 > 35/100 because 4/10 = 40/100 and 40 > 35.