SDE Chapter 3 Mid Quiz

Estimate the sum or difference.

741.26 + 103.75

• 650

• 750

• 840

• 740

Estimate the sum or difference.

89.5 - 41.8

• 50

• 130

• 47.7

• 130.3

Estimate the sum or difference.

13.47 - 9.82

• 3.65

• 23.29

• 3

• 23

Estimate the sum or difference.

64.952 + 17.513

• 40

• 80

• 82.465

• 47.439

THIS QUESTION HAS MULTIPLE ANSWERS. CHOOSE ALL CORRECT ANSWERS.

Descartes estimates a difference by rounding each number to the nearest whole number. His estimate is 6. Which problems could he have estimated?

• 97.5 - 91.8

• 10.3 - 4.6

• 23.7 - 18.1

• 7.2 - 0.8

Find the sum or difference.

0.27 + 0.19

Tags

CCSS.5.NBT.B.7

Find the sum or difference.

2.52 - 1.36

Tags

CCSS.5.NBT.B.7

Find the sum.

10.36 + 0.29

Tags

CCSS.6.NS.B.3

Find the sum.

461.2 + 78.5

Tags

CCSS.6.NS.B.3

Find the sum.

97.65 + 23.08

Tags

CCSS.6.NS.B.3