Hundreds with tens

1:13

a

1:13

th000 that was pretty simple right now

1:17

let's move on to adding numbers within

1:21

the hundreds we'll start with the tens

1:25

this is

1:27

110 110

1:32

or0 the and is optional

1:38

11010

1:40

120

1:43

120 again the and is

1:46

optional this is

1:48

130

1:49

130

1:52

130 okay let's try some higher numbers

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now this is

1:58

250 or

2:00

250 or

2:04

250

2:06

250

2:07

250

2:10

250 all three are

2:12

correct this is

2:15

375

2:17

375 or

2:20

375 this is

2:22

480 480 or

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480