Parts of a Whole
#1 GO Math Book
1/4 + 3/4 = 4/4 or 1 whole quart
#3 GO Math Book
: Find 5 3/4 – 1 1/4 . Subtract the fractions first: 3/4 – 1/4 = 2/4 . Then subtract the whole numbers: 5 – 1 = 4. The difference is 4 2/4 , so Tricia used 4 2/4 feet of masking tape to make the design.
#12 GO Math Book
1/4 Mile Farther
#2 GO Math Book
6 2/3
#5 GO Math Book
2/8
#9 GO Math Book
To add two fractions, the whole must be the same size. Since the models are not the same size, the one-fifth size parts are not the same size. So, the models cannot be used to find the sum of 1/5 + 3/5
#10 GO Math Book
(A) Joe renamed 4/3 as 3/3 instead of 3/3 + 1/3 . So, he grouped 3/3 with the wholes as 1 whole but did not add 1/3 to the wholes.
(B) 8 1/3 yard
#4 GO Math Book
(A) 8/10
(B) 5/10 of the fairground... explanation please!
Use the properties and mental math to find the sum:
(6 3/6 + 10 4/6 ) + 9 2/6
26 3/6 or 26 1/2
#13 GO Math Book
5/8
#11 GO Math Book
1/5 + 2/5 = 3/5
True
False
#6 GO Math Book
10/12
The numerator shows the total number of twelfth-size parts shaded. The denominator shows the size of the parts
#7 GO Math Book
Associative
Commutative
Commutative
Associative
#14 GO Math Book
1/6