Math Mania- Number Sense Round 2

Measure Up(Unit conversions)

100

How many fluid ounces are in a cup?

8

200

1/12 hour is equal to how many minutes?

5

300

3 pints equals how many ounces?

48

400

160 inches = ______ centimeters

*5% rule

Actual answer 406.4

387-426

500

15 square miles = _____ acres

*5% rule 

Actual- 9600

Range- 9120-10080

Algebra Adventures(Expressions, equations, functions, and inequalities)

100

If f(x) = 3x – 5, then f(4)=

7

200

If -3x + 15 < 54, then x >

-13

300

6² – 26² =

-640

400

(1 + 3 + 5 + . . . + 11)²=

1296

500

                        DAILY DOUBLE
A school fundraiser starts with $500 already donated. Students then raise $35 each day. The fundraiser goal is to collect more than $1,200.

How many days will it take for the fundraiser to pass the goal?

35x + 500>1200

x=20

Geometry Genius(Area, Perimeter, volume and shapes)

100

The radius of a circle with a circumference of 100π is

r=C/2π

r=50

200

What is the area of a square with perimeter 36?

36/4=9

9x9= 81

300

What is the perimeter of a regular hexagon with sides measuring 4 1/2?

p=6a

a=27

400

The volume of a circular cylinder with radius 10 and length 25 is kπ. What is k?

formula- πr² 

2500π

500

The area of a right triangle with legs 4 1/4 and 16 is

A=ab/2

A=34

Brain Busters(Roman Numerals, Probability and Sets)

100

Roman Numerals

DLX=

560

200

√576=

24

300

57²=

3249

400

What is the probability a getting a sum of 9 when rolling a pair of dice?

P(9)=4/36

P=1/9

500

25³=

15625

14844 – 16406

Estimate It!(star problems)

100

Make an estimation

2025 + 224

actual= 2249

Estimation= 2137-2361

200

Make an estimation

225 x 399

Actual- 89775

Estimation= 85287 – 94263 

300

499 x 719 + 59 =

actual -358,840

Estimation Range= 340898 – 376782 

400

213 x 667 =

Actual=142,071

range= 134968 – 149174 

500

249 1/90 x 164=

Round to the nearest whole number

Actual= 40,838

Range= 38796 – 42879