Adding
Adding
Subtracting
Subtracting
estimate sum and difference
100
2/8 + 3/8
5/8
100
3/9 + 5/9
8/9
100
8/9 - 3/9
5/9
100
6/7 - 3/7
3/7
100

Mr. and Mrs. Davis ordered pizza for dinner. 𝟓/ 𝟖 of the pizza had anchovies on it. Which statement is true?

A. Less than half of the pizza has anchovies on it.

B. More than half of the pizza does not have anchovies on it. 

C. Less than half of the pizza does not have anchovies on it.

 D. Exactly half of the pizza has anchovies on it.  

c

200
8/35 - 6/35
2/35
200
6/6 - 1/6
5/6
200
7/9 - 4/9
3/9
200
7/6 - 4/6
3/6 or 1/2
200

𝟓/𝟖 of the pizza had anchovies 𝟏/𝟒 of the pizza had pineapple 𝟏/𝟖 of the pizza had olives 

Which statement is true?

 A. More slices of pizza have anchovies than pineapple and olives combined 

B. Less than 𝟏 𝟐 of the pizza has anchovies 

C. Exactly half of the pizza has pineapple or olives. D. More than half of the pizza has pineapple or olives on it.

a

300
3/16 + 4/16
7/16
300
35/78 + 37/78
72/78
300
35/67 -26/67
9/67
300
27/56 - 14/56
13/56
300

Mr. Davis ate 𝟒/𝟖 of the pizza. Mrs. Davis ate 𝟏/𝟒 of the pizza. Which statement is true? 

A. Mrs. Davis ate more than 𝟏/𝟐 of the pizza. 

B. Together, Mr. and Mrs. Davis ate more than 𝟏/𝟐 of the pizza. 

C. 𝟏/𝟐 of the pizza is left after dinner. 

D. Mr. Davis and Mrs. Davis ate the same amount of pizza.

b

400
57/102 +36/102
93/102
400
75/127 +27/127
102/127
400
102/124 - 71/124
31/124
400
987/1099-25/1099
965/1099
400

Callie is collecting bugs. 𝟏/𝟓 of her collection are butterflies 𝟐/𝟏𝟎 of her collection are ants The rest of her collection are flies Which statement is true? 

A. Less than half of her collection is flies. 

B. Exactly half of her collection is either butterflies or ants. 

C. More than half of her collection is flies 

D. More than half of her collection is ants

c

500
137/194 + 32/194
169/194
500
62/198 + 72/198
134/198
500
172/208 - 75/208
97/208
500
203/215 - 87/215
116/215
500

Callie is collecting bugs. 𝟖/𝟏𝟎 of her collection can fly 𝟏/𝟓 of her collection cannot fly Which statement is true? 

A. Exactly half of her collection cannot fly. 

B. More than half of her collection can fly. 

C. Less than half of her collection can fly. 

D. More than half of her collection cannot fly.

b

M
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