D1-L13 Decimals Practice : Notation, Place Value, Compare and Order

DECIMAL NUMBERS – D1                      Date/Time:               Tutor:

(Part 1) Revise (20mins)                                        Start Time:                 

1. Notation and Place Value, Comparing and Ordering of Decimals (up to 3 d.p) 

2. Comparing and Ordering Decimals, Using Number Lines

3. Conversion of Decimals and Fractions

(Part2) Practice (45 mins)                                      Start Time:

Express each decimal as a fraction or a mixed number in its simplest form

1.  0.4 =         

2.  1.6 =                     

Express each fraction or mixed number as a decimal.

3.   ¼ = 

4.  3/8 = 

Express each fraction or mixed number as a decimal.

5.  4 ½ = 

6.  2 2/5 = 

7.  Which is the greatest?

         3.5,       2.8,       3.04,      4.4

8.  Which is the smallest?

         64.049,      68.123,       65.408,       67.637

9. Arrange these numbers in decreasing order.

         6.606,        6.66,           6.6,             6.066

Round each decimal to 2 decimal places.

10.   8.123

11.   2.367

12.  99.999  

13.   In the number pattern below, what is the missing number in the box? (6/p1/18f)
         9.25,     9.55,      9.85, ?  ,     10.45

14. Express 0.15 as a fraction in the simplest form. (7/p1/18f)

(1)  3/10

(2)  3/15

(3)  3/20
(4)  3/25               

                                                                                                    

15*.  Round off 70.171 to the nearest tenth.

16.* Which digit in 68.57 is in the tenth place?

17*. In the number line below, what is the number indicated by the arrow?

                

(1) 9.88 

(2) 10.05 

(3) 10.15 

(4) 10.42                                                                                                        (           )

18.  In 356.174, what does the digit 7 stand for? (1/p1/18s)

(1) 7 thousandths

(2) 7 hundredths

(3) 7 tenths

(4) 7 tens                                                                                                       (           )

19.  Which one of the following numbers is the largest? (4/p1/18s)

(1) 0.8

(2) 0.72

(3) 0.098

(4) 0.605                                                                                                        (           )

20.  Simon’s height is 1.85 m. Round off his height to the nearest tenth. (19/p1/18s)

Answer Keys

1.   2/5
2.   1 2/5
3.    0.25
4.    0.375
5.   4.5
6.   2.4
7.   4.4
8.   64.049
9.   6.66, 6.606, 6.6, 6.066
10.  8.12
11.  3.37
12.  1.00
13.  3
14.  3
15.  7.02
16.  5
17.  102
18.  2
19.  1
20.  1.9m

D3-L15 Decimals Practice : Multiplication and Division

DECIMAL NUMBERS – D4 (~70 min)    Date/Time:               Tutor:             

(Part 1) Revise(15-20mins)                                               Start Time:                 

1. Multiplication and Division of Decimals (by 1 digit whole number, up to 2.d.p.)

(Part2) Practice (30-40mins)

Complete the Multiplication Tables (~5mins)

3x2=	4x2=	5x2=	6x2=	7x2=	8x2=	9x2=	12x2=
3x3=	4x3=	5x3=	6x3=	7x3=	8x3=	9x3=	12x3=
3x4=	4x4=	5x4=	6x4=	7x4=	8x4=	9x4=	12x4=
3x5=	4x5=	5x5=	6x5=	7x5=	8x5=	9x5=	12x5=
3x6=	4x6=	5x6=	6x6=	7x6=	8x6=	9x6=	12x6=
3x7=	4x7=	5x7=	6x7=	7x7=	8x7=	9x7=	12x7=
3x8	4x8	5x8	6x8	7x8	8x8	9x8	12x8
3x9=	4x9=	5x9=	6x9=	7x9=	8x9=	9x9=	12x9=

(I) Decimals (~20 mins)                  Start Time:                

Give your answer correct to 1 decimal place.

1.     2.84 x 9

2.     7 x 30.12

3.     26.15 x 8

4.     0.75 ÷3

5.    47.36 ÷ 8

6.    28.16÷4

7.   Find the value of 10.4 x 30

8.  Divide 1.7 by 7 correct to 2 decimal places.

9.  Estimate (a) 4.3 ¸6. Then find the actual value correct to 1 decimal place.

End Time:                          Mark:        /10

(II) PSLE/Word Problems (~25 mins)                   Start Time:                 

10.  A running track is 0.4 km long. James jogs 6 laps. What is the total distance that James jogs?

11.  Linda bought 3 oranges and a mango for $4.05. The mango cost $1.50. How much did each pineapple cost?

12.  Ken had $20. He bought 8 cans of drinks at 0.75 each. How much money did Ken have left?

For questions 13-14

3 groups of students collected $198 for their outing. This amount included $30 from their teacher. 

13.   How much did the group collected? 

14.   How much did each groups of students paid?

15.  Sally has $204.80. She has 4 times as much money as Eric. How much more money does Sally have than David?

16*.  Find the value of 0.46 x 70

17. Peter wanted to buy 6 books of the same price but found that he was short of $10.50. In the end, he bought 4 of the books and had $6 left. Find the cost of each book. 

18. Mindy sold 4 times as many headphone as mobile phone and collected a total of $8400. Each mobile phone costs $325 more than an headphone. The amount collected for all the headphones sold was $3480 more than the amount collected for all the mobile phones sold. How many mobile phones did Mindy sell?

End Time:                  Total Mark:      

Extra Practice

1.   Multiply. Give your answer correct to 1 decimal place.

            (a)  2.84 x 4

            (e)  3 x 6.05

2.   Divide. 

            (b)  6.79 ÷7

            (c)  20.45 ÷5

            (d)  27.36 ÷9

            (e)  20.04 ÷4

3.  Ronald bought two cakes for $2.40 and one packet of drink for $0.90. He then bought another 5 cakes and 3 packets of drinks for his friends. How much did he pay altogether? 

4.  Mindy was given $3 pocket money every day of the week. She spent $2.60 per day from Monday to Friday and saved the rest. She saved all her pocket money on Saturday and Sunday. Starting on a Monday, how many days did it take her to save $50?

Answer Keys

1.   25.56

2.   210.84

3.   20.92

4.   0.25

5.   5.92

6.   7.04

7.   312

8.   0.24

9.   ~0.7, 0.72

10.   2.4 km

11.   $0.85

12.   $2

13.   $168

14.   $56

15.  $153.60

16.  3.22

17.  $13.25

18.  3