Math - Unit 1 Decimals + Fractions Flashcards
Number to be divided
Dividend
Number dividing (How many can fit into the ______)
Divisor
If the product of a whole number and a decimal is 34.44, then what is the likely amount of decimal spaces one number had?
2 spaces
What to do when adding decimals?
Line up the decimal points, then add
What do you do when multiplying decimals?
Multiply the numbers as if they were whole numbers, then add on the decimal point based on how many decimal spaces each decimal had
What do you do when the divisor is a decimal?
Multiply by as many 10’s as you need, at the same time doing the same thing to the dividend
How do you multiply fractions? Mixed numbers?
Multiply across. If it is a mixed number, then turn it into an improper fraction, then continue to multiply
How do you divide fractions?
To divide, find the reciprocal of the second fraction (divisor) and change the division sign into a multiplication sign, then multiply
How do you divide fractions?
To divide, find the reciprocal of the second fraction (divisor) and change the division sign into a multiplication sign, then multiply
How does estimation help when dividing decimals?
Estimation helps because you are finding compatible numbers, or easy numbers. Easy numbers allow you to easily divide the numbers and get an estimate. The estimate will help you know if your answer is correct if the answer is near your estimate
What do you call the answer to a multiplication problem?
The product
What are compatible numbers?
Easy numbers. Friendly numbers that help you get an estimate easy and simple