Digits and Decimals

Question 1

A digit is =

Answer 1

a building block of a number 0-9

Question 2

Integers always start with non-zero and are …

Answer 2

whole numbers like 3,171,237 or 12

Question 3

Non-integers are…

Answer 3

Mixed numbers, with a decimal

Question 4

Describe what would happen to X is the following was applied

X * 10^0
X * 10^3
X * 10^ -2
X / 10^ -3

Answer 4

Place values are important for rounding.

Same as multiplying by 1
Same as multiplying by 1000
Same as dividing by 100
Same as multiplying by 1000

Question 5

How can you make multiplication easier with decimals…

Answer 5

Count all digits to right of decimal point. Multiply normally, then add back those decimal places to product

Question 6

How can you make division easier with decimals…

Answer 6

Use whole numbers. Drop the same amount of decimal places from top to bottom

Question 7

Z is the greatest integer less than or equal to X?

Answer 7

Integers are whole numbers, meaning you would round down