Show:
Rounding-No Boards
Estimating-No Boards
Add or Subtract - Use Boards
Multiply or Divide-Use Boards
**RANDOM **- No Boards
100
2.25 rounded to the nearest whole number
2
100
Estimate the sum of 7.4 + 3.7
7+4=11
100
8.74 - 5.43 =
3.31
100
6.1 x 100
610
100
Say this decimal out loud: 542.31
Five hundred forty-two and thirty-one hundredths
200
26.963 rounded to the nearest hundredth
26.96
200
Estimate the difference of 17.97 - 6.80
18 - 7 =11
200
12.07 + 7.9 =
19.97
200
6.2 divided by 100
.062
200
Which is greater and WHY? 31.521 or 31.64
31.64 is greater because both numbers have 31 wholes, but this decimal has a 6 in the tenths place. That is the largest decimal place that matters. OR if we changed them so both numbers went to the thousandths decimal place, they would look like this: 31.521 or 31.640 It is clear to see here that 31.640 is larger.
300
17.09 rounded to the nearest tenth
17.1
300
Estimate the product of 29.69 x 10 =
30 x 10 = 300
300
24.50 + 11.78 + 6.841
43.121
300
6.15 x 5.8
35.67
300
Say this number: 102,952.098
One hundred two thousand, nine hundred fifty-two and ninety-eight thousandths
400
49.95 rounded to the nearest tenth
50
400
Estimate the product of 61.21 x 3.84
60 x 4 = 240
400
15.1 - 4.63 =
10.47
400
6.88 divided by 3.2
2.15
400
Put these decimals in order from least to greatest: 1.5 1.09 1.325 1.46
Least = 1.09 1.325 1.46 Greatest= 1.5
500
313.5687 rounded to the nearest thousandth No boards!
313.569
500
Estimate the quotient of 23.1 divided by 3.89
24 divided by 4 equals 6?
500
348.23 - 89.567 =
258.663
500
1.452 divided by .24
6.05
500
I bought 3.5 pounds of turkey at the store recently. It cost $35.82 for all of it. How much did each pound cost? a. ESTIMATE the final answer and explain HOW you did it! b. Get a board and solve it! Give your final answer as a money amount.
a. Estimate = 40 divided by 4 = $10 b. Solution =10.234... When this answer is shown as a dollar amount, we must round it to the hundredths place. FINAL ANSWER = It costs $10.23 for each pound of turkey