Decimals – Subtraction
2 tenths - 1 tenth = 1 tenth
0.2 - 0.1 = 0.1
6 tenths - 3 tenths = 3 tenths
0.6 - 0.3 = 0.3
11 tenths - 5 tenths = 6 tenths
1.1 - 0.5 = 0.6
Decimals – Subtraction
How do you write 11 tenths in
decimal?
22 tenths - 7 tenths = 15 tenths
2.2 - 0.7 = 1.5
= 1 one and 5 tenths
Decimals – Subtraction
? ?
How do you write 22 tenths in
decimal?
22 hundredths - 7 hundredths
= 15 hundredths
0.22 - 0.07 = 0.15
= 1 tenth and 5 hundredths
Decimals – Subtraction
? ?
How do you write 22 hundredths in
decimal?
= 6 tenths
1.3 – 0.7 = 13 tenths - 7 tenths
Decimals – Subtraction
? ?
?
= 8 hundredths
0.25 – 0.17 = 25 hundredths - 17 hundredths? ?
?
= 0.6
= 0.08
= 2.3
How many tenths? = 23 tenths
What is 23 tenths in decimal?
What do you mean
by 2.3?
2 ones 3 tenths
2.3
What else can you say about
2.3?
2 ones 3 tenths
1 one 13 tenths
We regroup 1 one as 10
tenths.
= 0.23
How many hundredths? = 23 hundredths
What is 23 hundredths in decimal?
What do you mean by 0.23?
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
2 tenths 3 hundredths
0.23
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
2 tenths 3 hundredths
What else can you say about
0.23?
1 tenth 13 hundredths
We regroup 1 tenth as
10 hundredths.
Decimals – Subtraction
1 = ? tenths10
1 = 1 one
Decimals – Subtraction
6 = 5 ones ? tenths 10
6 = 6 ones We regroup 1 one as 10
tenths.
Decimals – Subtraction
8.7 = 7 ones ? tenths 17
8.7 = 8 ones ? tenths 7
We regroup 1 one as 10
tenths.
Decimals – Subtraction
0.35 = 2 tenths ? hundredths15
0.35 = 3 tenths ? hundredths5We regroup 1 tenth as
10 hundredths.
Decimals – Subtraction
1.26 = 1 one 1 tenth ? hundredths16
8 tenths 2 hundredths = 7 tenths ? hundredths12
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
So, 3.24 – 1.06 = 2.18
Decimals – Subtraction
So, 3.24 – 1.06 = 2.18
regrouping
Decimals – Subtraction
So, 3.24 – 1.06 = 2.18
Decimals – Subtraction
So, 3.24 – 1.06 = 2.18
Decimals – Subtraction
So, 3.24 – 1.06 = 2.18
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction
regrouping
Decimals – Subtraction
Decimals – Subtraction
Decimals – Subtraction