Estimation Station
Estimate of 98 x 103.
What is 100 x 100 or 10,000?
35 x 81
What is 2,835?
If you multiply the secret number by 4 and then subtract and then subtract 6, you get 30.
What is 9?
Crestline´s cafeteria uses 10 cases of eggs each month. Each case contains 12 dozen eggs. The number of eggs used per month.
What is 1,440 eggs
2 7 6
9 5 8
4 3 1
Two numbers that need to be switched to make this a true magic square.
What are 8 and 1?
The estimate of 908 x 7.
What is 900 x 7 or 6,300?
33 x 56.
What is 1,848?
You multiply 8 to the secret number and then add 6, you get 30.
What is 3?
Mrs. Woodham places one flower vase on each table in the cafeteria for a school event. The cafeteria has 13 rows with 5 tables in each row and 12 rows with 3 tables in each row. Mrs. Woodham already has 35 vases. The number of vases she needs to still buy.
What is 66 vases?
9 2 7
4 6
5 10 3
The missing number.
What is 8?
The estimate of 17 x 64
What is 20 x 60 or 1,200?
465 x 9
What is 4,185?
You multiply the secret number by 10 and then subtract 15 and get 25.
What is 4?
If the cafeteria wall has a panel that is 11 inches by 40 inches, what is the area available for hanging posters up for 4 total panels.
What is 1,760 square inches?
3 8 1
4 2 6
7 0 5
The two numbers that need to be switched to make this a true magic square.
What is 4 and 2?
The estimate of 25 x 81?
What is 30 x 80 or 2,400?
356 x 13
What is 4,628?
You multiply the secret number by 7 and then add 1 and get 50.
What is 7?
The Crestline cafeteria served 675 lunches each school day last month. What was the total number of lunches served in those 10 days?
What s 6, 750 lunches?
7 2 16 9
12 13 3 ?
1 8 10 15
14 11 5 ?
The sum is 34. The numbers that are missing.
What are 6 and 4?
The estimate of 469 x 8.
What is 470 x 10 or 4,700?
222 x 222
What is 49,284?
You multiply the secret number by 2 and then add the sum of 20 and 4, and then subtract the product of 6 and 8, you get 0.
What is 12?
Mrs. Woodham was extremely excited to sell 789 packets of Crystal Light each day last month. To her confusion, she only sold 368 bottles of water each day last month. How many more Crystal Light Packets were sold than water bottles in those 20 days last month?
What is 8,420 more crystal light packets.
40 100 90
140 180 60
120 20 160
Two numbers that must be switched to make this a true magic square.
What are 100 and 180?