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Thursday, 1 June 2017

Decimal fractions Wk5 T2.

 Decimal fractions

Place value practice with tenths and hundredths

We are learning to use tenths and hundredths

Example: Fill in your worksheet as shown

Example: 345.6

100
10
1
3
4
5
6

Expanded number: 300 + 40 + 5 + 6/10


Exercise 1


What to do
  1. Fill in your worksheet
  2. Then expand your number

1) 34.5 (2) 8.87 (3) 2.1

4) 18.9 (5) 23.8 (6) 1.6

7) 0.5 (8) 0.23 (9) 3.98

10) 15.2 (11) 15 (12) 674.1

13) 1023 (14) 1045.6 (15) 300.1

16) 89.44 (17) 0.96 (18) 0.35

19) 104.3 (20) 100.5












Question
1000
100
10
1
1/100
Expanded number
1.


3
4
5

30+4+5/10
2



8
8
7
8+8/10+70/100
3



2
1

2+1/10
4


1
8
9

10+8+ 9/10
5


2
3
8

20+3+8/10
6



1
6

1+6/10
7



0
5

0+5/10
8



0
2
3
0+2/10+30/100
9


3
9
8

3+9/10+80/100
10


1
5
2

10+5+2/10
11


1
5


10+5
12

6
7
4
1

600+7+4+1/10
13
1
0
2
3


1000+20+30
14
1
0
4
5
6

1000+40+5+6/10
15

3
0
0
1

300+1/10
16


8
9
4
4
80+9+4/10+40/100
17



0
9
6
0+9/10+60/100
18



0
3
5
0+3/10+50/100
19

1
0
4
3

100+4+3/10
20

1
0
0
5

100+5/10






Exercise 2


What to do:
Write the expanded numbers as a decimal fraction


Question
100
10
1
1/10
1/100
Decimal fraction
A
4
0
3
0
0
403
B
0
8
9
0
3
89.03
C
2
3
4
6
0
234.6
D
3
0
6
0
5
306.05
E
0
0
0
0
0

F
0
7
0
1
6
70.16
G
6
0
0
0
0
600
H
0
0
3
8
6
3.86
I
8
2
4
5
0
824.5
J
3
0
1
0
6
301.06
K
2
3
5
9
0
235.9




Exercise 3
Underline the hundredths in each question

1)  34.64 (2) 78 (3) 345.9

4)  1234.624 (5) 67.9 (6) 0.0122

7)  59.345 (8) 12345.82 (9) 456.6722

10)  12.89 (11) 0.897 (12) 21.2129


Exercise 4
Highlight the digit in the tens place

1) 24 741 (2) 18 932 (3) 78.043

4) 567.15 (5) 4536. 407


Exercise 5

Add one tenth () to each of these numbers

1)  0.8 (2) 0.4 (3) 12.1

4) 24.5   (5) 12.7 (6) 168.5

7)  2145.3 (8) 1.0 (9) 24.0


Exercise 6

Add one tenth (1/100) to each of these numbers

1)  0.72 (2) 0.31 (3) 12.04

4)  24.433 (5) 12.632 (6) 18.449   

7)  2145.21   (8) 0.91 (9) 23.96


Exercise 7

Take one tenth () from each of these numbers

1) 39.5 (2) 32.0 (3) 123.6

4) 0.79 (5) 45.5 (6) 56.0

7) 286. 1 (8) 39.0 (9) 8.1

(10) 478.20
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WALT-Identify and uses tenths and hundredths.

TASK: My task was to try understanding the identify and uses tenths and hundredths. I didn't know what to do or how to work it out but after a few try's I learn how to expand and to decimal fractions.

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