Sue's Math Project

Single variable

100

3+x=5

x=2

200

4xy=36

y=9

300

56÷y=8

y=7

400

(3+45)÷y=8

y=6

500

78÷2+(72-y)=103

y=8

Multi variable

100

2+y+e=10

y=3

e=5

200

7xn+o=20

n=2

o=6

300

n+50+(ox2)=400

n=300

o=25

400

(n+600)o=2000

n=400

o=2

500

(5+n)+(6+o)=16

n=3

o=2

BEDMAS

100

3+(2x3)=?

(2x3)=6; 3+6=9; ?=9

200

3x4+5=?

?=17

300

(17-2)÷3=?

?=5

400

56+(23-4)=?

?=75

500

58-43+(64÷8)=?

?=23

Word problem

100

Tino watch 5 Youtube videos every day. How many Youtube videos did he watch a week?

1 week= 7 days

5x7=35

Conclusion: 35 videos a week

200

Dad drinks 1 cup of home-made coffee a day, which costs only $2 to make. On Saturday, he buys coffee from a cafe, which costs $2.45. He doesn't drink coffee on Sunday. How much money does he spend on coffee in 2 weeks?

From Monday to Friday each week, he spends:

$2x5=$10

$10+$2.45=$12.45

$12.45x2=$24.9

Which means he spends $24.9 in 2 weeks.

300

Johny has $200 and he wanted to buy skateboards for him and his little sister. He went to the store and bought two skateboards that cost $70 each (luckily on sale). On the way home, he bought 2 Coca-Cola Cherry which costs him $3.98. how much money does he have left?

Skateboards: $70x2=$140

$140+$3.98=$143.98

$200-$143.98=$56.02

400

Sue is doing homework. She has to write 25 math problems. Each problem she spends 5 minutes to write, check the possibility of it and find the answer. She needs 1 minute to get an idea for a problem. How many hours does it take for her to finish the homework?

Each problem: 1+5=6 minutes.

25x6=150 minutes.

150÷60=2.5

It takes 2 and a half hours for her to finish.

500

After doing homework, Sue received money and was told by her dad that she needs to take a rest and go buy ice cream. She bought five ice cream that costs 25 cents each. She also bought 4 Sprites which costs $2 each. When she paid for all of them, she has $0.75 left. How much money did she received from her dad?

¢25x5=¢125; ¢125÷ 100=$1.25

$2x4=$8

$1.25+$8=$9.25

$0.75+$9.25=$10

She received $10

Vocabulary

100

What is the other word for Bracket in BEDMAS?

Parentheses

200

What comes before Application in BEDMAS?

Multiplication.

300

What is the second word in BEDMAS?

Exponent

400

If you Have to solve this problem: 4+2x3; what would you calculate first?

2x3

500

What is BEDMAS for?

To help remember the order of operations in algebra basics.