Decimal Word Problems & review

Decimal Review & Word Problems

​Comparing Numbers

How do we compare numbers?​

​¿Cómo comparamos números?

copy this chart in your notebook

​copia esto gráfico en tu cuaderno

​How do we compare?

​12.4 & 12.39

​look at each digit in order

​(from left to right)

​

​--->

​Mira cada dígito en orden

(De izquierda a derecha)

​12.4 > 12.39

Multiple Choice

$$23.45\ \ \ \ \left[\ \ \ \right]\ \ \ \ 23.356$$  

• <

• >

• =

Multiple Choice

$$3.22\ \ \ \ \left[\ \ \ \right]\ \ \ \ 3.2$$  

• <

• >

• =

Multiple Choice

$$9.754\ \ \ \ \left[\ \ \ \right]\ \ \ \ 9.743$$  

• <

• >

• =

How do we round numbers?​

​¿Cómo redondeamos los números?

Multiple Choice

Round 2.535 to the nearest TENTH

• 3

• 2.54

• 2.5

• 2.6

Multiple Choice

Round 14.7356  to the nearest HUNDREDTH

• 14.736

• 14.74

• 14.7

• 15

​Ellen wanted to buy the following items:

• A DVD player for $49.95

• A DVD holder for $19.95

• Personal stereo for $21.95

​

Does Ellen have enough money to buy all three items if she has $90.

​$21.95 + $19.95 + $49.95 = 91.85

​

​91.85 > 90... so NO!

Patricia has $425.82 in her checking account. How much does she have in her account after she makes a deposit of $120.75 ​

425.82 + 120.75 =

​

546.57

​Melissa has $50. She purchased $39.46 in groceries at a store.

How much does she have left?

​50.00-39.46 = 10.54

​The mass of a jar of sugar is 1.9 kg.

What is the mass of 13 jars of sugar?

​1.9 x 13 =24.7

​Brad studied a total of 24.4 hours over a period of four days. On average, how many hours did

Brad study each day?

​24.4 DIVIDED by 4 = 6.1

​

​6.1 hours each day

​If your weekly salary is $1,015.00, how much do you have left each week after you pay for the

following?

 Rent - $443.50

 Cable TV -$23. 99

 Electricity - $45.62

 Groceries - $124.87

​443.50 + 23. 99 + 45.62 + 124.87 = 637.98

$1,015.00 -637.98 = 377.02