Facts
When adding and subtracting decimals, it's important to line up the __________ in both numbers.
Decimal point or place value
At a restaurant last week, 4 times as many hot dogs were sold as hamburgers. The restaurant sold a total of 588 hot dogs last week. How many hamburgers were sold last week at the restaurant?
147 hamburgers
Add these decimals. 21.74 + 8.27
30.01
Multiply these decimals. 0.03 x 100
3
Subtract these decimals.
3.53 - 2
1.53
4.6 / 2
2.3
the number you are dividing into is called ____________
Dividend
Some tubes of paint cost 94 cents each including tax. Lexi paid $18.80 in all. How many tubes of paint did she buy?
20 tubes of paint
Add these decimals.
17 + 9.54
26.54
Multiply these decimals. 0.7 x 2.6
1.82
Subtract these decimals.
2.15 - 1.05
1.1
0.98 / 1
0.98
the number you are dividing by is called ______________
Divisor
Alison bought 142 inches of ribbon to make bows for her friends. She needs 12 inches of ribbon to make each bow. How much ribbon will she have left over?
10 inches
Add these decimals. 6.125 + 18
24.125
Multiply these decimals.
0.23 x 7.5
1.725
Subtract these decimals.
10.71 - 0.7
10.01
4 divided by 50
.08
The answer to a division problem is called the
Quotient
A giraffe measures 6 meters tall. An elephant measures 3.2 meters tall. The height of the giraffe is how many times as tall as the heigh of the elephant?
1.875
Add these decimals. 4.67 + 29.1
33.77
Multiply these decimals. 2.5 x 3.04
7.6
Subtract these decimals.
1.72 - 0.8
0.92
49.6 / 6.2
8
How to divide two decimals.
Write in long division form
Make the divisor a whole number by moving the decimal point to the ______
Move decimal point the same number of places in dividend
Complete long division
Carry up decimal point to final answer
Right
Julia has $5.68. She buys as many bookmarks as she can for 75 cents. How many bookmarks can she buy?
7 bookmakrs
Add these decimals.
5.2 + 3.11
8.31
Multiply these decimals. 4.04 x 5.3
21.412
Subtract these decimals.
2.54 - 1.82
0.72
Divide 7.14 by 0.7
10.2