Rules
Ballpark Numbers
Parts to Total
Addition Extensions
Number Differences
100
The rule is +10. If I put 17 into the machine, which number will come out?
27
100
If you were to make a ballpark estimate of the number 98, what would you round it to?
100
100
Jess has 42 Pokemon cards and he just got 14 more. What is the total number of cards that Jess has (you must say a UNIT)?
36 Pokemon cards
100
You know 1 +3, so what's 10 + 30?
40
100
Mr. Bezeau read 14 books and Mrs. Bezeau read 17 books. How many more books did Mrs. Bezeau read than Mr. Bezeau (use a unit)?
3 books
200
The rule is -25. If I put 46 into the machine, which number will come out?
21.
200
Make a ballpark estimate of 14 + 29.
About 40
200
Katie worked at the restaurant 3 days last week. In tips she made $14.00 on Monday, $17.00 on Tuesday and $36.00 on Friday. How much money did she make in tips altogether?
$67.00
200
You know 8 - 2, so what's 80-20?
60
200
Macy ate 12 treats and Dexter at 23. How many more treats did Dexter eat than Macy (use a unit)? (Bad kitties!!)
11 more treats
300
I put 67 into the machine and 49 came out. What is the rule?
18
300
Make a ballpark estimate of 76-23.
About 60
300
Derek has $29.00 in his bank account. For his birthday, his Grandma deposited $50.00 and his Mom deposited $82.00. His brother deposited $20.00 How much money does Derek have in his account now?
$181.00
300
130+ 170?
300
300
Justin has 56 Pokemon cards and Mathieux has 98. How many more Pokemon cards does Mathieux have than Justin (use a unit)?
42 Pokemon cards
400
I put 124 into the machine and 183 came out. What is the rule?
59
400
Make a ballpark estimate of 124 + 62
About 180
400
Macy likes running laps. On Monday she ran 36 laps around the house. On Wednesday she ran 67 laps. On Thursday she ran 45 laps and on Friday she ran 25 laps. What is the total number of laps that Macy ran?
193 laps.
400
680-450?
230
400
Templeton found 43 eggs. Wilbur found 15 more eggs than Templeton. How many eggs did Wilbur find?
58 eggs
500
If the rule is 30, and 100 is the OUTPUT, what did I put in?
70
500
What would the ballpark estimate be of 349 + 246?
600
500
Sam has 128 Silly Bands that he got for his birthday. He got them from his Aunt Sue, his Grandpa, and his friend Mike. Aunt Sue gave him 42 Silly Bands. Grandpa gave him 60. How many Silly Bands did Mike give him (make sure to say a a unit)?
26 Silly Bands
500
1,100 + 7,800?
8,900
500
Greg Hefferly avoids 23 bullies at his school. Rowley avoids 38 more bullies than Greg. How many bullies does Rowley avoid?
61 bullies
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