The answer is...
Multiples of 10
dogs
double double
squares
100

The answer when you add

sum

100

there are 10 groups of 4 people . How many people are there altogether?

40

100

there were 40 dogs at the dog park. 25 more dogs showed up. How many dogs are at the dog park now?

65

100

8 x 4

32

100

2 x 2

4

200

the answer when you subtract

difference

200

there are 10 groups with 40 people in each group. How many peopl altogether?

400

200
there were 450 dogs at the dog show. Only 75 dogs won prizes. How many dogs did not win prizes?

375

200

10 x 4

40

200

3 x 3 

9

300

the answer when you multiply. 

product

300

there are 10 groups with 4000 people in each group. How many people altogether?

40 000

300

there were 45 dogs at the dog park. How many dog paws were there?

180

300

15 x 4

60

300

4 x 4 

16

400

the answer when you divide. 

quotient 

400

there are 10 groups of 40 000 people, How many people altogether?

400 000

400

On monday, there were 10 dogs at the dog park. Eevery day the number of dogs doubled from the previous day.  How many dog were at the park on friday? 

160 dogs 

400

12 x 4

48

400

5 x 5 

25

500

the numbers you multiply together are called

factors 

500
there are 1000 groups of 4000 people. How many people are there altogether?

4 000 000

500

there were 365 dogs at the park on Saturday and 450 dogs at the park on Sunday. How man more dogs were there on Sunday?

85 dogs

500

150 x 4 

600

500

10 x 10

100

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