Math-Unit 3 review

Which equation does this number line show?

• 40+30= 70

• 50+30= 80

• 30 60 90

• 50+ 40 = 90

Choose all that are the same amount as 34+9+ 6.

• 30+10 +9

• 30+10+6

• 49

• 30+20+9

• 40+9

Choose all that have a sum of 60.

• 30 + 30

• 55 +15

• 10+50

• 45+ 15

• 25+25

Shane has 54 markers. His sister gives him 17 more markers. How many markers does Shane have now?

• 37 markers
• 71 markers
• 60 markers

George has 6 crackers. Arthur has 4 more crackers than George. Choose all the equations that show how many crackers they have in all.

• 6+6=12

• 6+10=16

• 6+4=10

• 6+6+4=16

• 6+6+6=18

Felix had 56 shells. He finds 38 more shells. He gives 10 shells to Saul. How many shells does Felix have now?

• 84
• 90
• 82
• 68

Which shows 35 rounded to the nearest ten?

• 30

• 40

• 50

• 60

A number was rounded to the nearest ten and the result was 90. What is the smallest value the number could be?

• 88

• 87

• 90

• 85

A number was rounded to the nearest ten and the result was 70. What is the largest value the number could be?

• 84
• 74
• 80
• 76

Which of the following are equal to 80 when rounded to the nearest ten?

• 88

• 79

• 83

• 85