Bridging-Ten
Number Sequence
Estimation
Number Patterns
Random!
100

16 - 9 = ?

7

(17 - 10 = 7) 

100

Which number is missing from this sequence?

105, 106, 107, 108, 109, __

110

(skip counting forward by 1's)

100

If the Easter bunny left 5 chocolates for each student in our class, how many chocolates did they leave?


125 - skip count by 25's, 5 times.

(25, 50, 75, 100, 125)

100

Fill in the missing number in the pattern.

The first number is 2. The rule is to add 3.

2, 5, 8, __

11

100

What is Miss Lifford's favorite number? 

11! 

200

15 + 9 = ? 

24

(14 + 10 = 24)


200

Which number is missing from this sequence?

45, __, 55, 60, 65, 70, 75

50

(skip counting forward by 5's)

200

Approximately how many students would be playing soccer if we played a game against Miss J's class?

Between 40 and 50!

(25 students in our class + 15/25 students in Miss J's class) 

200

Fill in the missing number in the pattern.

The first number is 1. The rule is to add 4.

1, 5, 9, __

13

200

What is 3 times Miss Lifford's favorite number? 

33!

300

19 + 8 = ?

27

(17 + 10 = 27)

300

Which number is missing from this sequence?

7, 16, __, 34, 43, 52, 61

25

(skip counting forward by 9's)


300

The Lemon family has 56 grams of Lime jelly. They also have 96 grams of Orange jelly. In all, about how many grams of jelly do they have? Choose the better estimate. 

160 grams or 200 grams

160 grams

(56 is close to 60, 96 is close to 100. 60 + 100 = 160)

300

Fill in the missing number in the pattern.

The first number is 60. The rule is to subtract 10.

60, 50, 40, __

30

300

How many days was Mrs. Bourgoin's vacation? Where did she go? 

7 days in Cuba!

400

27 - 9 = ? 

18

(28 - 10 = 18) 

400

Which number is missing from this sequence?

78, 86, 94, 102, __

110

(skip counting forward by 8's)

400

After a rainstorm, 85 trees fell, and 13 had to be cut down. About how many trees are down. Choose the better estimate.

95 trees or 100 trees

100 trees

(13 is close to 15 which we can easily add to 85 by making 10's. 15 + 85 = 100) 

400

Fill in the missing numbers in the pattern.

The first number is 1. The rule is to multiply by 2.

1, 2, 4, 8, __

16 

400

What is half of Miss Lifford's favorite number?

5.5 - it's an odd number!

500

24 - 8 = ?

16

(26 - 10 = 16)

500

Which number is missing from this sequence?

117, 108, 99, 90, __, 72

81

(skip counting backward by 9's) 

500

Miss J's class raised two groups of stick bugs. In one group, 53 larvae turned into stick bugs. In the other group, 58 larvae turned into stick bugs. In total, about how many larvae turned into stick bugs? Choose the better estimate.

80 larvae or 110 larvae

110 larvae

(58 is close to 60. 53 + 60 = 113)

500

Fill in the missing number in the pattern.

The first number is 40. The rule is to subtract 4.

40, 36, 32, 28, __

24

500

If Miss Lifford was born in 2001 and hasn't had a birthday yet this year, how old is she? 

22 - turning 23 in November!