Math jeopardy game

Multiplying and dividing by powers of 10

100

56 x 10²

5600

200

Write whether 1, 2, or 3 is correct:

8 x 10³    1. 800   

              2. 8000

              3. 80,000 

2. 8000

300

__mg=0.0025kg

83000

400

__t=65,700,000mg

0.0657

500

(256,000,000/10⁷) - (0.000,049 x 10⁵)

20.7

Rounding

100

2.473 (2 d.p)

2.47

200

8.695389612 (4 d.p)

8.6954

300

Work out 28.67284 - 3.42649, the answer round to the 2 d.p place

25.25

400

Answer the question by first rounding the numbers to the 3 d.p ,and then subtract:

26.799764 - 21.6592762

5.141

500

132.6199969876 + 864.4599969743

997.08000

Ordering decimals

100

Write these numbers from biggest to smallest:

18.3, 18.9, 18.1, 18.5, 18.6

18.9, 18.6, 18.5, 18.3, 18.1

200

Write the smallest number from each of the pairs:

1. 3.5, 9.1

2. 214.92, 311.67

3. 34.56, 43.562

1= 3.5

2= 214.92

3= 34.56

300

Write the smallest number from each of these pairs:

1. 0.22, 0.3

2. 5.6, 5.41

3. 25.67, 25.76

1= 0.22

2= 5.41

3= 25.67

400

For each list write the numbers from least to greatest:

1. 42.449, 42.42, 42.441, 42.4

2. 9.09, 9.7, 9.901, 9.04, 9.99

1= 42.4, 42.42, 42.441, 42.449

2= 9.04, 9.09, 9.7, 9.901, 9.99

500

Put the following answers in order of size (greatest to least):

1. 2110/100

2. 0.0208 x 100

3. 1.9 x 10

4. 2320/1000

5. 2000/1000

6. 0.23 x 10

2, 2.08, 2.3, 2.32, 19, 21.1

Adding and subtracting decimals

100

8.8 - 3.4

5.4

200

1 - 0.64

0.36

300

-5.23 - -15.5

10.27

400

 -15.98976 + 9.923408

-6.066352

500

 -146.27859 + 23.4476892

-122.8309008

Multiplying and dividing decimals

100

0.9 x 2

1.8

200

4.8 x 34

163.2

300

0.596 x 3856

2298.176

400

Round your answer to the nearest degree of accuracy:

 47.7/53 (whole number)

1

500

Write your answer in the given degree of accuracy:

 10.064/68 (2 d.p)

0.15