Adding Decimals
For adding and subtracting decimals, Do we add a place order zero to set up our equation?
True or False?
Show an example.
True!
When you can't subtract a small digit from a large digit, what do you do?
You borrow from a neighbor!!!
When do you add a place holder zero?
When you begin to move place values and add.
True or False: Does the standard algorithm pattern change when multiplying 3 by 2 numbers?
False!
what are the 3 steps when multiplying decimals?
1. Drop yo decimals
2. Multiply like normal
3. Count Decimal places and add them back in
4.25 + 3.6 =
7.85
8.75 - 3.42 =
5.33
12 x 14 =
168
789 x 35
27,615
3.2 x 1.4 =
4.48
0.76 + 9.34 =
10.10
20.50 - 13.84 =
6.66
56 x 32
1,792
985 x 97
95,545
65.1 x 0.8 =
52.08
Aidan bought a box of cereal for $4.65 and a gallon of milk for $3.89. How much did she spend in total?
$4.65 + $3.89= $8.54
A sunflower grew to 8.40 feet tall, while a neighboring daisy grew to 2.75 feet tall. How much taller is the sunflower than the daisy?
8.40 - 2.75= 5.65
A farm Oliver planted 45 rows of corn plants, putting 22 plants in each row. How many total corn plants were planted?
45 x 22 = 990
A school ordered 142 lunch boxes for a field trip. If each lunch box costs $15, what is the total cost of the lunch boxes?
142 x 15 = $2,130
A small lawnmower engine holds 1.5 gallons of fuel. If gasoline costs $2.40 per gallon, how much does it cost to fill the engine?
1.5 x 2.40 = $3.60
Nala needs sugar for two recipes. The first recipe calls for 1.35 cups of sugar, and the second calls for 0.85 cups. How many cups of sugar does she need in total?
1.35 + 0.85= 2.20
Leo paid for a $12.35 lunch with a $20.00 bill. How much change did he receive?
12.35 - 20.00= 7.65
A baker Mia bakes 35 trays of cookies every day. If each tray holds 15 cookies, how many cookies do they bake each day?
35 x 15 = 525
An orchard harvested 789 crates of apples. If each crate holds 35 pounds of apples, how many pounds of apples were harvested in total?
789 x 35 = 27,615
Mr. B needs 2.0 pieces of ribbon, each measuring 4.15 feet long. How many total feet of ribbon does he need?
4.15 x 2.0 = 8.30