Math 5.1, 5.2, 5.3 - Number and Number Sense

5.1 Rounding Decimals

100

Round to the nearest whole number.

342.981

343

200

Round to the nearest hundredth.

342.981

342.99

300

Round to the nearest tenth.

54.263

54.3

400

Round to the nearest tens.

54.263

50

500

Round to the nearest tenth.

342.981

343.0

5.2a Equivalents

100

Change 1/2 to a decimal.

0.5

200

Change 4/5 to a decimal

0.8

300

Change 1/3 to a decimal.

0.333...

400

Change 5/8 to a decimal.

0.625

500

Change 23/20 to a decimal.

1.15

5.2b Comparing and Ordering

100

Fill in the symbol.

1/3 _____ 0.3

> greater than

200

Fill in the symbol.

3/8 _____ 0.380

< Less Than

300

Order from Least to Greatest:

0.6,  3/4,  1/2

1/2,  0.6,  3/4

400

Order from Greatest to Least.

4/5,  19/25,  0.5

4/5,  19/25,  0.5

500

Place in ascending order.

1/4,  1/8,  3/5,  14/20,  0.3

1/8,  1/4,  0.3,  3/5,  14/20

5.3a Prime and Composite

100

Is 13 a prime or a composite number?

Prime

200

A number with more than 2 factors is ...

Composite

300

What are the first 4 prime numbers?

2, 3, 5, 7

400

What is a neutral number?

A number with only 1 factor.  The number 1 is the only example.

500

Is 51 Prime or Composite?

Composite

5.3b Even and Odd

100

Is 13 an even or odd number?

Odd

200

A number that can be divided by 2 is ...

Even

300

An odd number is ... (define it)

A number that can not be equally divided into 2 groups.

400

An even number plus an odd number will always equal ...

Odd

500

The product of an even and an odd number will always be ...

Even