Respuesta :

Answer:

First Part

(1) 867

(2) 1347

(3) 1045

(4) 693

Second Part

(1) 638

(2) 539

(3) 825

(4) 843

Step-by-step explanation:

FIRST PART, REGROUPING ONES

(1)

6 5 3

+

2 1 4

=

8 6 7

(2)

4 1 4

+

9 3 3

=

1 3 4 7

(3)

3 2 1

+

7 2 4

=

1 0 4 5

(4)

4 3 2

+

2 6 1

=

6 9 3

SECOND PART

(1)

1 8 6

+

4 5 2

=

6 3 8

(2)

3 7 4

+

1 6 5

=

5 3 9

(3)

1 7 2

+

6 5 3

=

8 2 5

(4)

3 9 1

+

4 5 2

=

8 4 3

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