Adding and Subtracting
What is the sum of 1.75 + 1.2
2.95
True or False?
When multiplying decimals, you need to line up the decimals.
False! Only when adding and subtracting!
10.5 ÷ 1.5
7
3 9/10 x 2/3
Hint: You need to change the mixed number to an improper fraction BEFORE multiplying.
2 3/5
1 5/6 ÷ 4 1/6
Hint: You need to change the mixed numbers to improper fractions BEFORE dividing.
11/25
5/12
9.4 x 4.7
44.18
5.12 ÷ 3.2
1.6
5/8 x 4/15
1/6
4/11 ÷ 2/7
1 3/11 or 14/11
What is the difference of 5.721 - 1.98
3.741
4.4 x 6.02
26.488
15.4 ÷ 0.25
61.6
2 3/8 x 8/5
Hint: You need to change the mixed number to an improper fraction BEFORE multiplying.
3 4/5 or 19/5
9/10 ÷ 6/5
3/4
3/14
27.2 x 4.6
125.12
32.436 ÷ 4.4
7.2718181818
You can only do this when multiplying fractions. It does not work with adding, subtracting, or dividing. What is it?
Cross simplifying! (Simplifying BEFORE multiplying)
When dividing fractions, it is helpful to remember these three words. What are they?
Keep Change Flip!
Convert 3 pts to fl oz.
48 fl oz
42.7 x 32.6
1,392.02
When dividing decimals, which number CANNOT have a decimal? Choose one.
A) The dividend (the numerator/number on the inside)
B) The divisor (the denominator/number on the outside)
B: The divisor
3/5 x (2 2/7) x (3 3/4)
Hint: You need to change the mixed numbers to improper fractions BEFORE multiplying.
5 1/7 or 36/7
4 1/6 ÷ 1 1/3
Hint: You need to change the mixed numbers to improper fractions BEFORE dividing.
3 1/8 or 25/8