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Dau coroana, plzz răspunde ți repedeeee!!
3.Calculeaza și fa proba prin operația inversa:
A) 20:2=. 18:3=. 45:5=. 21:7=.
B) 7x6=. 9x4=. 8x3=. 6x9=. ​


Răspuns :

Răspuns:

A) 20:2=10

Proba: 2×10=20

18:3=6

Proba:6×3=18

45:5=9

Proba:9×5=45

21:7=3

Proba:3×7=21

B)7×6=42

Proba:42:7=6

9×4=36

Proba:36:9=4

8×3=24

Proba:24:8=3

6×9=54

Proba:54:9=6

Explicație pas cu pas:

Sper ca ți-am fost de ajutor

Răspuns:

A) 20:2=10

A) 20:2=1020:10=2

A) 20:2=1020:10=210x2=20

A) 20:2=1020:10=210x2=202x10=20

A) 20:2=1020:10=210x2=202x10=2018:3=6

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=3

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=18

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=18

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=9

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=5

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=45

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=45

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=3

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=7

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=21

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=42

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=42

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=6

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=7

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=36

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=36

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=4

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=436:4=9

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=436:4=98x3=24

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=436:4=98x3=243x8=24

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=436:4=98x3=243x8=2424:3=8

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=436:4=98x3=243x8=2424:3=824:8=3

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=436:4=98x3=243x8=2424:3=824:8=36x9=54

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=436:4=98x3=243x8=2424:3=824:8=36x9=549x6=54

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=436:4=98x3=243x8=2424:3=824:8=36x9=549x6=5454:6=9

A) 20:2=1020:10=210x2=202x10=2018:3=618:6=36x3=183x6=1845:5=945:9=59x5=455x9=4521:7=321:3=73x7=217x3=21B) 7x6=426x7=4242:7=642:6=79x4=364x9=3636:9=436:4=98x3=243x8=2424:3=824:8=36x9=549x6=5454:6=954:9=6