Is 4.784 closer to 4.7 or 4.8? Prove your answer on a number line.
4.7 (number line should show numbers 4.7, 4.71, 4.72, 4.73, 4.74, 4.75, 4.76, 4.77, 4.78, 4.79, 4.8) and a mark where 4.784 would be between 4.78 and 4.79)
25
Write two reasonable estimates (equations and answers) for 6.78 - 3.21 = ?
need two of the following: 7 - 3 = 4 , 6.75 - 3.25 = 4 , 7 - 3.25 = 3.75 , 6.75 - 3 = 3.75
20
42.8 + 5.09 = ?
47.17
15
28.05 - 13.47 = ?
14.58
15
8.32 + 11.5 + 28.765 = ?
48.585
15
Write the number in standard and expanded forms. thirty thousand, four hundred twenty one and five hundredths