Multiply/Divide
12 x 6 =
72
56 + 84 =
140
What do perpendicular lines always do?
Create at least 1 right angle
1/5 + 3/5 =
4/5
If you see the word "sum" in a sentence, what does it mean you have to do?
add
77 ÷ 7 =
11
92 - 36 =
56
What do parallel lines do or not do?
They never touch
9/10 - 2/10 =
7/10
If you see the words "equal groups" in a sentence, what does it mean you have to do?
divide
342 x 5 =
1,710
421 - 114 =
307
Two angles add up to 90°. One of the angles measure 42 degrees. What is the measure of the other angle?
48°
5 x 1/8 =
5/8
If you see the word "product" in a sentence, what does it mean you have to do?
multiply
4,809 x 6 =
28,854
832 + 397 =
1,229
How many degrees are there in a half turn (half circle)?
180°
7 x 1/7 =
7/7 or 1 whole
If you see the word "remainder" in a sentence, what does it mean you have to do?
divide
694 ÷ 3 =
231 r1
1,000 - 509 =
491
What is the highest number of degrees that an acute angle can be?
89°
Which is larger? 48/100 or 1/2
1/2
If you see the words "how many more" in a sentence, what does it mean you have to do?
subtract