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Sheet # 400

Name_________________________Date:_____________

1) There are 20 students in Mr.Smith's class and 15 students in Mrs. Norton's class. Which number sentence could be used to find out how many students are in both classes?

a) 15 + ? = 20

b) ? - 20 = 15

c) 20 - 15 = ?

d) 20 + 15 = ?




2) Last week 15 people bought bicycles. This week 12 people bought bicycles. Which number sentence could be used to find out how many people bought bicycles in two weeks?

a) 12 + ? = 15

b) 15 - 12 = ?

c) 15 + 12 = ?

d) 15 - ? = 12




































Answers for sheet # 400

1) d
2) c