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