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Ivan
3 years ago
14

30 + 40 = 40+10= 50+0= 40+10=

Mathematics
2 answers:
marusya05 [52]3 years ago
4 0

Answer:

70

50

50

50

Step-by-step explanation:

Add the first digit of each number and then add a zero

Oliga [24]3 years ago
3 0

Answer:

70

50

50

50

The easiest way to do it is to add the first digits then add the zero.

Hope that helps and have a great day!

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