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rounding
adding
1 time table
2 time table
3 time table
100

What is  48 round to the nerst ten

50

100

44 t 1=

45

100

1 x 1

1

100

2 x 1

2

100

3 x 1

3

200

What is 38  round to the nerst ten

40

200

44 t 7=

51

200

1 x 2

2

200

2 x 2

4

200

3 x 2

6

300

What is 546 round to the nerst ten

550

300

400 t 1

401

300

1 x 3

3

300

2 x 3

6

300

3 x 3

9

400

What is 400 round to the nerst ten

400

400

44 t 3 

80

400

1 x 4

4

400

2 x 4

8

400

3 x 4

12

500

what is 876 round to the nerst ten

880

500

500 t 7

507

500

1 x 5

5

500

2 x 5

10

500

3 x 5

15