PEMDAS/GEMDAS
What is the first step you must follow when using order of operations?
Parentheses or Grouping ( )
6 x -4.9
29.4
-16.8 ÷ 4
-4.2
9/10 * (-2/3)
-3/5
-5/6-: 1/6
-30/6 or -5
True or False:
You would calculate the sum of 10 and 5 before you find the quotient of -75 and 5. Explain your answer
False:
Sums are addition and quotients are division, and Order of Operations says to do all multiplication or division BEFORE you add or subtract
-9.4 x (-4.7)
44.18
6.4 ÷ (-3.2)
-2
-5/8 * (-4/15)
1/6
-4/11-: -2/7
28/22 or 14/11 or 1 3/11
100 - 20 - (3 x 3)2 + 2 - 1=
zero
-7.2 x 0.1
-0.72
-5.1 ÷ (-1.5)
3.4
-1 1/3 * 7/9
-28/27 or -1 1/27
9/10-:(-1 1/5)
-45/60 or -3/4
How is multiplying and dividing rational numbers similar to multiplying and dividing integers?
The same rules for signs of integers are applied to rational numbers.
2.3 x 8.1
18.63
9.1 ÷ (-2.6)
-3.5
-5/3 * -2/3
10/9 or 1 1/9
-1/6-:1 1/3
-3/24 or -1/8
What does 20 x 100 + 30 x 10 + 80/2 + 5 equal?
2345
-5.3 x 6.2
-32.86
-1.8 / 0.4
-4.5
-3/5 * 1 2/7
-27/35
-13/8 -: -1/2
13/4 or 3 1/4