Count Backwards: 20-10

In this worksheet, students count backwards from 20 to 10, noting any missing numbers in the sequence.

Key stage:  KS 1

Curriculum topic:   Number: Number and Place Value

Curriculum subtopic:   Count to 100

Difficulty level:

QUESTION 1 of 10

Estimating means giving your best guess. Use the clues to help you make a really good guess before you actually count the number of objects.

Example:

Use the clues given. Look at the number of objects from left to right they are going down by one each time. If there are 5 stars, 4 clubs and 2 ladies then there is likely to be 3 umbrellas.

First estimate and then count the number of umbrellas. Then you must write the correct number.

 5 4 ? 2

First estimate and then count the number of sun's. Write the correct number below.

 ? 18 17 16

First estimate and then count the number of snowflakes. Write the correct number below.

 17 16 15 ?

First estimate and then count the number of musical notes. Write the correct number below.

 14 13 ? 11

First estimate and then count the number of fish. Write the correct number below.

 18 ? 16 15

First estimate and then count the number of flowers. Write the correct number below.

 13 12 11 ?

First estimate and then count the number of butterflies. Write the correct number below.

 17 16 ? 14

First estimate and then count the number of  blue stars. Write the correct number below.

 ? 15 14 13

First estimate and then count the number of pink flowers. Write the correct number below.

 12 11 10 ?

First estimate and then count the number of butterflies. Write the correct number below.

 17 16 ? 14
• Question 1

First estimate and then count the number of sun's. Write the correct number below.

 ? 18 17 16
19
EDDIE SAYS
There are 19 suns.
• Question 2

First estimate and then count the number of snowflakes. Write the correct number below.

 17 16 15 ?
14
EDDIE SAYS
There are 14 snowflakes.
• Question 3

First estimate and then count the number of musical notes. Write the correct number below.

 14 13 ? 11
12
EDDIE SAYS
There are 12 musical notes.
• Question 4

First estimate and then count the number of fish. Write the correct number below.

 18 ? 16 15
17
EDDIE SAYS
There are 17 fish.
• Question 5

First estimate and then count the number of flowers. Write the correct number below.

 13 12 11 ?
10
EDDIE SAYS
There are 10 flowers.
• Question 6

First estimate and then count the number of butterflies. Write the correct number below.

 17 16 ? 14
15
EDDIE SAYS
There are 15 butterflies.
• Question 7

First estimate and then count the number of  blue stars. Write the correct number below.

 ? 15 14 13
16
EDDIE SAYS
There are 16 blue stars.
• Question 8

First estimate and then count the number of pink flowers. Write the correct number below.

 12 11 10 ?
9
EDDIE SAYS
There are 9 pink flowers.
• Question 9

First estimate and then count the number of butterflies. Write the correct number below.

 17 16 ? 14
15
EDDIE SAYS
There are 15 butterflies.
---- OR ----

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