Oder of operations
What is the last step in the order of operations?
Addition and subtraction
2 x 21 =
42
9/3 =
3
10 x 2 +3 =
23
What weighs more - a pound of iron or a pound of feathers?
Both would weigh the same - come on, a pound remains a pound, irrespective of the object!
What is the first step in the order of operations?
Groups
7 x 7 =
49
7 x 3 =
21
3 + 3 - 3 x 2 =
0
If there are four apples and you take away three, how many do you have?
You took three apples so obviously you have three.
What is the purpose of the order of operations?
To establish a common rule to follow when speaking the "language" of math.
152 x 10 =
1,520
2(2+2)=
8
2(22+2)=
12
Using only addition, how can you add eight 8's to get the number 1,000?
888 +88 +8 +8 +8 =1,000
When following the order of operations multiplication comes before division. True or false?
False
LEFT TO RIGHT
3 x 4 x 2 =
24
22(2 + 3 x 2)=
32
20 - 10(2) + 10 -3 =
7
If a rooster laid 13 eggs and the farmer took eight of them and then another rooster laid 12 eggs and four of them were rotten, how many of the eggs were left?
Roosters don't lay eggs!
....but it would've been 13......
What is the first thing you would do in this problem?
22+10=
Exponents
What is multiplication?
repeated addition
33=
27
6 x 3 - 4 + 2(32 + 2 x 2)=
40
If Johnny has two less than Dave, and Dave has two less than Tim, and Tim has one more than Natalie, and Natalie has 6; how many does Johnny have?
3