This week I had to identify decimal and learn how to expand big decimal numbers.
Decimal fractions
Place value practice with tenths
We are learning to use tenths
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
 Fill in your worksheet
 Then expand your number
1) 34.5 (2) 8.7 (3) 2.1
4) 18.9 (5) 23.8 (6) 1.6
7) 0.5 (8) 0.2 (9) 3.9
10) 15.2 (11) 15 (12) 674
13) 1023 (14) 1045.6 (15) 300.1
16) 89.4 (17) 0.9 (18) 0.3
19) 104.3 (20) 100.5
Question

1000

100

10

1

Expanded number
 
1.

3

4

5

3 tens, 4 ones and 5 tenths
 
2

8

7

8 ones and 7 tenths
 
3

2

1

2 ones and 1 tenths
 
4

1

8

9

1 tens, 8 ones and 9 tenths
 
5

2

3

8

2 tens, 3 ones and 8 tenths
 
6

1

6

1 ones and 6 tenths
 
7

0

5

0 ones and 5 tenths
 
8

0

2

0 ones and 2 tenths
 
9

3

9

3 ones and 9 tenths
 
10

1

5

2

1 tens, 5 ones and 2 tenths
 
11

1

5

0

1 tens and 5 ones
 
12

6

7

4

6 hundred, 7 tens and 4 ones
 
13

1

0

2

3

1 thousand, 0 hundred, 2 tens and 3 ones
 
14

1

0

4

5

6

1 thousands, 0 hundred, 4 tens, 5 ones 6 tenth

15

3

0

0

1

3 hundred, 0 tens, 0 ones and 1 tenths
 
16

8

9

4

8 tens, 9 ones and 4 tenths
 
17

0

9

0 ones and 9 tenths
 
18

0

3

0 ones and 3 tenths
 
19

1

0

4

3

1 hundred, 0 tens, 4 ones and 3 tenths
 
20

1

0

0

5

1 hundred, 0 tens, 0 ones and 5 tenths

Exercise 2
What to do:
Write the expanded numbers as a decimal fraction
Question

100

10

1

1/10

Decimal fraction

A

4

3

403.0
 
B

8

9

89.0
 
C

2

3

4

6

234.6

D

3

6

306.0
 
E
 
F

7

1

70.1
 
G

6

600.0
 
H

3

8

3.8
 
I

8

2

4

5

824.5

J

3

1

301.0
 
K

2

3

5

9

235.9

Exercise 3
Underline the tenths in each question
1) 34.6 (2) 78 (3) 345.9
4) 1234.6 (5) 67.9 (6) 0.012
7) 59.345 (8) 12345.8 (9) 456.67
10) 12.89 (11) 0.897 (12) 21.21
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
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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