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level: Basic calculations

Questions and Answers List

level questions: Basic calculations

Question	Answer
What is the definition of a whole number?	A number with no decimal point
If you are putting minus numbers in order, would the lowest number be closer to 0 or further away from 0?	Further away
If you are putting numbers with decimal places in order, would 0.1 be greater or lower than 0.01?	Greater
When doing addition with two decimal places, you can add together the numbers after the decimal place first, if this is greater than 100, add one to the number before the decimal place. Using this logic, what is 1.52 + 0.63?	2.15
If you are multiplying a whole number by 10, you can add a zero to the end of it to find your answer. Using this logic, what is 150 x 10?	1500
If you are multiplying a number with a decimal point by 10, you can move the decimal point forwards one place to find your answer. Using this logic, what is 1.55 x 10?	15.5
If you are multiplying a whole number by 100, you can add two zeros to the end of it to find your answer. Using this logic, what is 120 x 100?	12,000
If you are multiplying a number with a decimal point by 100, you can move the decimal point forwards two places to find your answer. Using this logic, what is 1.755 x 100?	175.5
If you are multiplying a whole number by 1000, 10,000 or higher, you can add the same number of zeros to the end of it to find your answer. Using this logic, what is 140 x 10,000?	1,400,000
If you are multiplying a number with a decimal point by 1000, 10,000 or higher, you can move the decimal point forwards the same amount of places as there are zeros to find your answer. Using this logic, what is 1.8 x 1,000?	1,800
If you are multiplying a number by a larger number like 20, 30, 40 etc, you can multiply using just the first number first, and then add the zeroes to the end. Using this logic, what is 15 x 20?	300
To divide any number by 10, you can move the decimal point backwards one place, or one point from the end if there is no decimal point. Using this logic, what is 20 ÷ 10?	2
To divide any number by 100, you can move the decimal point backwards two places, or two points from the end if there is no decimal point. Using this logic, what is 500 ÷ 100?	5
If you are dividing a number by a larger number like 20, 30, 40 etc, you can divide by just the first number first, and then move the decimal point back by the number of zeroes from the end. Using this logic, what is 200 ÷ 20?	10
When adding plus numbers to even numbers, you move up from the lowest minus number past 0, then into the plus numbers. Using this logic, what is -5 + 10?	5
When subtracting a higher plus number from a lower plus number, you move backwards into lower minus numbers. Using this logic, what is 10 - 20?	-10