Multiplying decimals
5.1 x 2.3
2.55
When we have a problem like 1.2 + 2.30 what do we do with the empty space?
You would put a 0
2.2 - 1.6
0.6
1.2 + 2.3
3.5
1.2 x 2
2.4
2.5 x 2.3
5.75
what do we do if one of the numbers is negative and the other positive
The answer is that you subtraction
5.8 - 4.3
1.5
3.5 + 4.5
8.0
2.3 x 3.2
7.36
1.20 x 5.8
6.960
Marci wants a bike for $50.99 But she only has 34.43. how much money does she need?
She needs 16.56 more to buy it.
5.450 - 3.60
1.85
(-6.2) + (-4.6)
-10.8
2.35 x 3.40
7.99
8.60 x 10.95
94.17
Jake gets paid $15.35 per hour. He wants to buy a scooter for his brother that costs $150. How many hours does he have to work to buy it?
The answer is 8. He would have to work eight hours to earn 160.40 for the scooter
5.90 - 3.26
2.64
5.5 + 8.12
13.62
6.94 x 4
27.76
20.9 x 6.3
131.67
Dani has a total of $90.00 and wants to buy a DVD player for $49.95 and a DVD holder for $19.95 and also a personal stereo for $21.95. Does Dani have enough money to buy them all?
No she does not have enough the total is $91.85
6.943 - 2.638
4.305
5.34 + 9.80
15.14
5.43 x 7
38.01