Adding Numbers
Subtracting Numbers
Number Patterns
Estimation
Word Problems
100
24 + 32 = ?
56
100
96 - 23 = ?
73
100
Rule: Subtract 2
30, 28, 26, _________, _________
24, 22
100
Estimate the answer below.
397 ---->
+ 235 ---->
______
400
+ 200
______
600
100
Marco has 9 more baseball cards than Kal. Kal has 15 baseball cards. How many cards does Marco have?
9 = 15 = 24
Marco has 24 baseball cards.
200
637 + 148 = ?
785
200
656 - 274 =
382
200
Rule: Add 8
14, 22, 30, ________, ________
38, 46
200
Estimate the answer below.
2,189 ---->
+ 1,388 ---->
_______
2,000
+ 1,000
_______
3,000
200
A marching band has 2 times as many trumpet players as tuba players. There are 7 tuba players. How many trumpet players are there?
2 x 7 = 14
There are 14 trumpet players.
300
1,581 + 4,285 =
6,066
300
6,754 - 2,835 = ?
3,919
300
What is the rule?
21, 27, 33, 39, 45
Add 6.
300
Estimate the answer below.
8,765 ---->
- 4,221 ---->
__________
9,000
- 4,000
__________
5,000
300
C is correct. 7 x 6 =
400
25, 681 + 71, 938 = ?
97,619
400
36,094 - 14,362 = ?
21,732
400
What is the rule? What is the missing number?
97, 90, 83, 76, _______
Subtract 7.
69
400
Estimate the answer to the problem below.
65,327 − 14,231 = ?
70,000 - 10,000 = 60,000
400
The Bucks practice 13 hours a week. The Tigers 26 hours a week more than the Bucks. How many hours a week do the Tigers practice?
13 + 26 = 39
The Tigers practice 39 hours a week.
500
5,034 + 1,342 + 3,617 = ?
9,993
500
74,006 - 33,827= ?
40,179
500
12, 28
500
Estimate the answer to the problem below. Round to the ten thousand place.
753,265 − 419,057 = ?
750,000 - 420,000 = 330,000
500
The Bucks practice 9 hours a week. The Cougars 6 times as many hours as the Bucks. How many hours a week do the Cougars practice?
9 x 6 = 54
The Cougars practice 54 hours a week.