Compound Interests lvl.1
Compound Interests lvl. 2
Challenge Problems lvl. 1
Challenge Problems lvl. 2
Simple problems
200

Deb puts $500.00 into an account to use for school expenses. The account earns 2% interest, compounded annually. How much will be in the account after 8 years? 

1.02^8=1.1716

Around $585.83.

200

Ernesto and Shivani deposit $500.00 into a savings account which earns 13% interest compounded annually. They want to use the money in the account to go on a trip in 2 years. How much will they be able to spend? 

1.13^2=1.145+0.32

About $638.45.

200

What is 17^2

What is 289?

200

When divided by an integer (larger than 1), 127 and 75 get remainders 2and a, respectively. The integer is ______. The value of a is ______.

What are 23 and 6?

127/x R2a

75/x Ra = 150/x R2a

(150 - 127)/x R(2a - 2a) = 23/x R0

75/23 = 13 R6

200

78 to the 4th power is?

(10 seconds)

37015056

400

Janelle opened a savings account and deposited $200.00. The account earns 3% interest, compounded annually. If she wants to use the money to buy a new bicycle in 2 years, how much will she be able to spend on the bike? 

1.03^2=1.061

Around $212.18.

400

Pete opened a savings account and deposited $200.00 as principal. The account earns 13% interest, compounded annually. What is the balance after 7 years? 

1.13^7=2.3540-0.0014

About $470.52.

400

What is 72*68

4896

400

When a table lamp sells for 20 dollars. Irene can sell 150 table lamps. For each 1 dollar increasing in price, Irene will sell 5 table lamps less. To make the income the largest, the price of the lamp should be _______ dollars.

25
400

How to find the hypotenuse of a triangle when you know the lengths of the 2 legs. (Formula)

a/sina = b/sinb = c

600

Irma opened a savings account and deposited $800.00 as principal. The account earns 3% interest, compounded annually. What is the balance after 6 years? 

1.03^6=1.940

Around $955.24.

600

a) Larry invested $27,000 in a savings account that pays an annual interest rate of 1.8%. The savings account is set to compound quarterly (4 times per year). How much is in Larry’s account after 5 years? 

1.018^2=1.1-0.0068

Around $29,536.74.

600

The square root of 451584.

An exact answer is required!

What is 672?

600

3+(x-7)/5+(2x+1)/4=(5x+2)/2

17/36

600

A right triangle has an area of 150. One leg of the triangle has a length of 15. What is the perimeter of the triangle?

60 

800

Bert puts $400.00 into an account to use for school expenses. The account earns 4% interest, compounded annually. How much will be in the account after 10 years? 

1.04^10=1.4802

About $592.10.

800

Becky invested 19,800 in a CD that pays an annual interest rate of 5.3%. The CD is set to compound daily (365 times per year). How much is in Becky’s account after 9 years? Note: Ignore the extra day from leap years 

1.053^9=1.6000-0.0083

About $31,901.32.

800

if a☐b=a^4+2a^3b-2ab^3-b^3. What is (189☐188)☐(1089☐1088)

What is 1?

800

How many prime numbers are there from 1 to 10000?

(30 seconds) 

1229

800

34 to the 5th power is?

(20 seconds)

45435424

1000

Cassie opened a savings account and deposited $800.00. The account earns 12% interest, compounded annually. If she wants to use the money to buy a new bicycle in 3 years, how much will she be able to spend on the bike? 

1.12^3=1.405

About $1,123.94.

1000

Kiera puts $600.00 into an account to use for school expenses. The account earns 7% interest, compounded annually. How much will be in the account after 4 years? 

1.07^4=1.387-0.76

About $786.48.

1000

The center of circle P lies on circle O and the center of circle O lies on circle P, what is the area of the quadrilateral bounded by the center of O and the center of P, and the 2 points where O and P intersect. Circle of 10.

What is 50√(3) ?

1000

2,1 = 9

4,2 = 18

5,3 = 18

6,3 = 27

9,4 = ??

45

ab - ba = c

1000

243 to the power of 4 is

(30 seconds)

3486784401

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