Estimating
Estimate the sum of 3 and 1/9 and 2 5/6
Approx. 3 + 3 = 6
Find the sum of 2/5 and 1/3 using a common denominator
6/15 +5/15= 11/15
Subtract 1/4- 7/8
5/8
Find the sum 2 1/6 + 1 3/6
3 4/6 or 3 2/3
A recipe needs 3/4 cups of sugar You have 1/2 cup. How much more do you need?
3/4- 2/4 = 1/4 cup
Why must you rename 5 and 1/4 to subtract 2 and 3/4
Because 1/4 is smaller than 3/4 you must regroup 1 whole into 4/4 to make 5/4
What is the total of 3/10 + 2/5 Write the answer in simplest form.
3/10 + 4/10= 7/10
5/6-1/3
3/6 or 1/2
Solve 4 4/5- 2 1/10
4 8/10- 2 1/10 + 2 7/10
Kelly ran 11/4 miles and Josh ran 2 3/8 miles. How far did they run in total?
1 2/8 + 2 3/8 = 3 5/8
Estimate the difference between 10 7/8 and 4 and 1/5
Approx 11-4+7
Rename 2/3 and 1/4 using their least common denominator.
Common denominator is 12
Solve and explain your steps 11/12-3/4
2/12 or 1/6
Solve 5 1/3 + 3 5/6
5 2/6+ 3 5/6 =8 7/6
=9 1/6
A board is 8 1/2 feet long. A carpenter cuts off 3 3/4 feet. How much is left
8 2/4- 3 3/4= 7 6/4- 3 3/4= 4 /3/4
Is 1 1/3 + 2 and 2/3 a whole number? Explain why or why not.
Yes 1/3 + 2/3 = 1 whole1 + 2 + 1 = 4
Find the sum of three fractions: 1/2 + 1/4 +1/8
4/8+ 2/8+1/8=7/8
Subtract 6- 2 and 2/3
5 3/3 - 2 2/3 = 3 and 3 1/3
Solve 7 2/9- 3 5/9
6 11/9- 3 5/9 = 3 6/9 or 3 2/3
Tristan had 2 1/3 lbs of grapes. He ate 5/6 lbs. How many pounds are left?
2 2/6 - 5/6 = 1 8/6 - 5/6 = 1 3/6 or 1 1/2 lbs
Estimate the perimeter of a triangle with sides 4 and 7/10 in 5 and 1/8 and 3 9/10
Approx. $5 + 5 + 4 = 14$ inches.
Find the missing fraction 3/5+?= 19/20
The missing fraction is 7/20
Find the Difference between 5 1/4- 2 2/3
5 3/12- 2 8/12
4 15/12- 2 8/12
=2 7/12
Solve 12 1/8- ( 3 1/2+ 4 3/4)
Parentheses first 3 2/4 + 4 3/4 =7 5/4 = 8 1/4
Then 12 1/8- 8 2/8 = 11 9/8 - 8 2/8= 3 7/8
A project uses 1/3 of a wood piece for a base and 2/5 for a support. What fraction is left for the top?
5/15 + 6 /15= 11/15 used. Remaining is 1 - 11/15 = 4/ 15