Number Patterns
15, 25, 35, ___, 55
Rule is:_____
45
Rule is +10
G=12+8
G=?
G=20
Mrs. Hackett's class has 21 students. Mrs. Habig's class has 19 students. How many students do they have in all?
40 students
How would you label each spot on the number line?
A. By 1's B. By 10's C. By 100's
<---|---|---|---|---|---|---|---|---|---|---|--->
0 100
B. By 10's
514, 414, 314, ___, 114
Rule is:_____
214
Rule is -100
9+Y=17
Y=?
Y=8
Grady and Adam collect Pokemon cards. Grady has 423 and Adam has 224. How many do they have altogether? How many more cards does Grady have than Adam?
They have 647 cards altogether.
Grady has 199 more cards than Adam.
Approximately what number is marked on the number line?
<--|----|----|----|----|--x-|----|----|----|----|----|-->
0 10 20 30 40 50 60 70 80 90 100
Teacher Decides
In Out
11 22
45 56
88 ?
Fill in the blank and find the rule.
99
Rule is +11
___=90-20
70
Sarah is selling candy bars for school. She sold 23 candy bars on Monday, 41 candy bars on Tuesday, and 8 candy bars on Wednesday. She started with 100 bars.
How many bars has she sold so far?
How many bars does she have left?
She has sold 72 bars.
She has 28 bars left.
Approximately where would you mark 93 on the number line?
<--|----|----|----|----|----|----|----|----|----|----|-->
0 10 20 30 40 50 60 70 80 90 100
Between 90-100
In Out
26 ?
52 ?
90 ?
Rule -4
22
48
86
18+23=P+18
P=?
P=23
Mrs. Hensley has 87 folders. 25 of them are red and 32 of them are blue. The rest are green. How many are green?
30 folders are green
Approximately what number is marked on the number line?
<--|----|----|----|----|----|----|----|x---|----|----|-->
0 100 200 300 400 500 600 700 800 900 1,000
Teacher Decides
In Out
? 73
? 36
? 14
Rule is -2
75
38
16
(24+35)+P=(71+35)+24
P=____
P=71
Mrs. Lukich has doughnuts. She has 18 chocolate, 23 sprinkle, and 25 strawberry. She shares 42 doughnuts with the teachers at Westwood. How many doughnuts does she have left?
24 doughnuts
Approximately where would you mark 290 on the number line?
<--|----|----|----|----|----|----|----|----|----|----|-->
0 100 200 300 400 500 600 700 800 900 1,000
Close to 300