5.N.3.1 Estimate Fractions

• 6

• 5

• 4

• 7

• 11 miles

• 12 miles

• 13 miles

• 10 miles

• 4

• 5

• 6

• 7

• 1

• 2

• 0

• 1

• About 3 hours

• About 2 hours

Which of the following is the best estimate for the following expression?

32.44 + 60.39

• 91

• 94

• 93

• 92

Which of the following is the best estimate for the expression below?

82.882 - 54.947

• 27

• 28

• 29

• 30

Miguel weighs his cats, Rex and Midnight. Rex weighs 9.61 kilograms, and Midnight weighs 3.46 kilograms.Miguel says that Rex weighs about 5.5 kilograms more than Midnight.

Is his statement reasonable?

• Yes, because 9.61 kilograms is about 9 kilograms, and 3.46 kilograms is about 3.5 kilograms, so Rex weighs about 5.5 kilograms more than Midnight.

• No, because 9.61 kilograms is about 9.5 kilograms, and 3.46 kilograms is about 3.5 kilograms, so Rex weighs about 6 kilograms more than Midnight.

• No, because 9.61 kilograms is about 10 kilograms, and 3.46 kilograms is about 4 kilograms, so Rex weighs about 6 kilograms more than Midnight.

• Yes, because 9.61 kilograms is about 9.5 kilograms, and 3.46 kilograms is about 4 kilograms, so Rex weighs about 5.5 kilograms more than Midnight.

Which of the following is approximately equal to the sum below?

22.9 + 45.31

• 66

• 67

• 68

• 69