Mixed Operations
Explain the order in which we solve mixed operations.
Parenthesis, exponent, multiply, divide, add, subtract (PEMDAS)
the exponent in a power of ten tells you what?
how many zeros to add
541 x 34
18,394
Define dividend, divisor, quotient, remainder
dividend: the # being divided
divisor: the # doing the dividing
quotient: the answer to a division problem
remainder: the amount left over from a division problem
when you divide two powers of ten, what is the rule with the exponents?
you subtract them/ they tell you how many zeros to get rid of
Explain the rule when you have both multiplication & division OR addition & subtraction in the same problem.
whichever comes first!
4 x 105 + 6 x 102
400,600
983 x 43
42,269
Which number is the divisor and which is the dividend? 532 ÷ 34
532 = dividend
34 = divisor
109÷107
102
5 x 10 +7 x (4 +2)
92
9x107 - 3x102
89,999,700
1,920 x 12
23,040
721 ÷ 32
22 r17
54,000 ÷ 103
54
9-3+10x3
36
8x104 + 6x103 + 4x107
40,086,000
Which gives the greater answer? 348 x 12 OR 173 x 43? How much greater is the answer?
173 x 43 gives the greater answer by 3,263
8193 ÷ 48
170 r33
2,800,000 ÷ 105
28
Where do I put the parenthesis to make this problem correct?
8 x 4 + 6 - 18 = 62
8 x (4 +6) -18
Mrs. Brown gave you the problem 4x103+5x102-1x101+300. What does it equal?
4790
Holly wanted to eat treats. She bought 782 bags of treats. Each treat bag cost $45. If Mrs. Brown paid with $40,000, how much change will she get?
$35,190 for the treats & $4,810 for change
Mrs. Brown ordered 6030 pairs of shoes. She wants to give her 14 students the shoes. How many shoes will each student get? How many will be left over?
Each student will get 430 shoes and there will be 10 left over.
5x105÷103
5x102 or 500