Quito Decimals

Adding Decimals

100

621.45 + 72.3

693.75

200

46.3 + 31.42

77.72

300

26.3 + 774 =

800.3

Algorithms Who's Correct?

100

Picture 1

Who is correct, Elena or Andre?

Andre

200

Picture 2

Who is correct, Elena or Andre?

Andre

Subtracting Decimals

100

2.26 - 1.32

0.94

200

8.53 - 2.7

5.83

300

6.62 - 3.71

2.91

Estimate!

100

Which whole number is the sum 6.8 + 4.97 closest too?

7 + 5 = 12

200

Which whole number is the  sum 3.62 + 1.49 closest too?

4 + 1 = 5

300

Which whole number is the difference 15.27 - 4.3 closest to?

15 - 4 = 11

400

Which whole number is the difference 16.14 - 9.8 closest to?

16 - 10 = 6

Final Jeopardy

500

Find the value of 622.35 - 71.4

550.95