Math

Adding

100

168+157=?

325

200

28+19=?

47

300

369,000+27=?

369,027

400

639+100=?

739

500

578,902+639=?

579,541

Synia

100

Solve for ^x in the equation:

3x+5=?

Hint-(20) used this number to help

3x=15

X=5

200

What is the area of a rectangle that has a length of 10 units and a width of 4 units? Use,(A=length x width) to help you

^{A=10x4=40 square unit} 

300

If 5x-7=18, what is the value of ^x?

^5x-7+7=18+7

^5x=25

^{X = 25/5}

^X=5

The value of ^x is 5.

400

If the ratio of cats to dogs in a shelter is 3:2 and there are 12 cats, how many dogs are there?

3/2=12/x 

3x=24

 x=8

There are 8 dogs

 

500

If you invest $1000 at an interest rate of 5% per year, how  much interest will you earn in 3 years?

I=1000x0.05x3=$150

$150 in interest 

Subtracting

100

235+363=?

-128

200

648-238=?

410

300

394-517=?

-123

400

133-788=?

-645

500

33-531=?

-498

Multiplication

100

2x2=?

4

200

8x12=?

96

300

12x12=?

144

400

7x4=?

28

500

5x7=?

35

Syria

100

There are 24 flowers in 4 basket.How many flowers will be there in each basket?

6 flowers in each basket 

200

23+18+17=?

58

300

I am greater than 78 and less than 82.I am less than 90.WHO AM I???

79,80 or 81

400

Sophia swims 4 laps every day.How many laps will Sophia swims in 2 days?

8 laps in 2 days 

500

An insect has 6 legs.How many legs do 3 insects have?

Total legs=6x__=18

Total is =18 legs