End-of-Year - Math

You need to line up the decimal points of the numbers in your problem when you are performing which mathematical operations?

• Adding

• Multiplying

• Subtracting

• Dividing

There is no need to line up the decimal points of the numbers in your problem when you are performing which operations?

• Adding

• Multiplying

• Subtracting

• Dividing

When estimating the answer to a multiplication operation similar to this one, an effective strategy is to . . .

783 x 417

• Mentally round the numbers to their greatest place value and multiply using basic math facts, adjusting the answer with the appropriate number of zeroes.

• Jot down the first two digits of each number and multiply them, then add the right number of zeroes.

• Do the math with paper-and-pencil, get the exact answer, then round that to the greatest place value.

• Pick off the first digit of each number, then multiply them. Add the proper number of zeroes.

When the divisor in your long division problem has decimal digits, you must remember to . . .

• Move the decimal to the right in both the divisor and the dividend enough places to make the divisor a whole number.

• Round the divisor up so that it is a whole number, then divide like always.

• Move the decimal in the dividend so that that number now has the same number of decimal digits.

• Be sure to move the decimal in the dividend and the divisor to the left enough so that that both numbers have only significant digits that are decimal digits.

The subtrahend is . . .

• The number you are subtracting from another number in a subtraction problem.

• The number you are subtracting something from in a subtraction problem.

• The number you get when you multiply by a positive and a negative number.

• The answer to a subtraction problem.

The minuend is . . .

• The number you are subtracting something from in a subtraction problem.

• The number you are subtracting from another number in a subtraction problem.

• The remainder in a division problem with decimal digits in the dividend.

• The answer to a subtraction problem.

The difference is . . .

• The answer to a subtraction problem.

• The value you get when you round before performing a mathematical operation.

• The number you are subtracting something from in a subtraction problem.

• The number you are subtracting from another number in a subtraction problem.

Numbers added together in an addition problem are called . . .

• Addends

• Factors

• Multiplicands

• Addingers

The numbers multiplied times each other in a multiplication problem are called . . .

• Factors

• Multiplicands

• Timeulators

• Addends

The number being divided up in a division problem is called the . . .

• Dividend

• Divisor

• Quotient

• Divideulon