 # Know Your Numbers: Jumping Forwards and Backwards in Ones

In this worksheet, students count backwards and forwards in ones and fill in the numbers that are missing from the sequence. Key stage:  KS 1

Curriculum topic:   Number: Number and Place Value

Curriculum subtopic:   Count to 100

Difficulty level:   ### QUESTION 1 of 10

Freddie the frog loves jumping around on number lines. He always likes to make a clever number sequence. Use your finger to follow the jumps that he makes.

Example:

Count the frog's jumps to work out missing numbers in the sequence.

Pop your finger on the first number, then follow the jumps. Are the numbers getting bigger or smaller? Is Freddie going backwards or forwards?  Can you see a pattern? What could the missing number be? What could the next number be?  20 ?(21) ?(22) 23 24

Count the frog's jumps to work out missing numbers in the sequence.  13 a=? b=? 16 17 18
a= 14 and b=15

a= 15 and b=14

a= 12 and b=11

Count the frog's jumps to work out missing numbers in the sequence.  a=? 13 14 15 16 b=?
a= 12 and b=17

a= 15 and b=14

a= 14 and b=15

Count the frog's jumps to work out missing numbers in the sequence.  13 a=? b=? 16 17 18
a= 14 and b=15

a= 15 and b=14

a= 12 and b=17

Count the frog's jumps to work out missing numbers in the sequence.  22 a=? 24 25 b=? 27
a= 23 and b=26

a= 20 and b=25

a= 26 and b=25

Count the frog's jumps to work out missing numbers in the sequence.  18 19 20 a=? 22 b=?
a= 23 and b=21

a= 21 and b=23

a= 21 and b=24

Count the frog's jumps to work out missing numbers in the sequence.  12 13 a=? 15 16 b=?
a= 14 and b=17

a= 17 and b=14

a= 14 and b=15

Count the frog's jumps to work out missing numbers in the sequence.  22 21 a=? 19 b=? 17
a= 17 and b=18

a= 20 and b=18

a= 21 and b=17

Count the frog's jumps to work out missing numbers in the sequence.  16 15 a=? 13 12 b=?

a= 21 and b=17

a= 11 and b=18

a= 14 and b=11

Count the frog's jumps to work out missing numbers in the sequence.  17 18 a=? b=? 21 22
a= 20 and b=19

a=19 and b=20

a= 21 and b=17

Count the frog's jumps to work out missing numbers in the sequence.  a=? 11 b=? 13 14 15
a=11 and b=13

a=12 and b=10

a= 10 and b=12

• Question 1

Count the frog's jumps to work out missing numbers in the sequence.  13 a=? b=? 16 17 18
a= 14 and b=15
EDDIE SAYS
13, 14, 15, 16, 17, 18 is the sequence. Freddie is jumping forward 1 place each time.
• Question 2

Count the frog's jumps to work out missing numbers in the sequence.  a=? 13 14 15 16 b=?
a= 12 and b=17
EDDIE SAYS
12, 13, 14, 15, 16, 17 is the sequence. Freddie is jumping forward 1 place each time.
• Question 3

Count the frog's jumps to work out missing numbers in the sequence.  13 a=? b=? 16 17 18
a= 14 and b=15
EDDIE SAYS
13, 14, 15, 16, 17, 18 is the sequence. Freddie is jumping forward 1 place each time.
• Question 4

Count the frog's jumps to work out missing numbers in the sequence.  22 a=? 24 25 b=? 27
a= 23 and b=26
EDDIE SAYS
22, 23, 24, 25, 26, 27 is the sequence. Freddie is jumping forward 1 place each time.
• Question 5

Count the frog's jumps to work out missing numbers in the sequence.  18 19 20 a=? 22 b=?
a= 21 and b=23
EDDIE SAYS
18, 19, 20, 21, 22, 23 is the sequence. Freddie is jumping forward 1 place each time.
• Question 6

Count the frog's jumps to work out missing numbers in the sequence.  12 13 a=? 15 16 b=?
a= 14 and b=17
EDDIE SAYS
12, 13, 14, 15, 16, 17 is the sequence. Freddie is jumping forward 1 place each time.
• Question 7

Count the frog's jumps to work out missing numbers in the sequence.  22 21 a=? 19 b=? 17
a= 20 and b=18
EDDIE SAYS
22, 21, 20, 19, 18, 17 is the sequence. Freddie is jumping backwards 1 place each time.
• Question 8

Count the frog's jumps to work out missing numbers in the sequence.  16 15 a=? 13 12 b=?

a= 14 and b=11
EDDIE SAYS
16, 15, 14, 13, 12, 11 is the sequence. Freddie is jumping backward 1 place each time.
• Question 9

Count the frog's jumps to work out missing numbers in the sequence.  17 18 a=? b=? 21 22
a=19 and b=20
EDDIE SAYS
17, 18, 19, 20, 21, 22 is the sequence. Freddie is jumping forward 1 place each time.
• Question 10

Count the frog's jumps to work out missing numbers in the sequence.  a=? 11 b=? 13 14 15
a= 10 and b=12
EDDIE SAYS
10, 11, 12, 13, 14, 15 is the sequence. Freddie is jumping forward 1 place each time.
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