Answer:
1) (12+3)-7
=15-7
=8
2) 4 (6+8)
= 4(14)
=56
3) 25+5+9
=30+9
=39
4)11-4
=7
5) (16•3)•10
=48•10
=480
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Answer:
1) (12+3)-7
=15-7
=8
2) 4 (6+8)
= 4(14)
=56
3) 25+5+9
=30+9
=39
4)11-4
=7
5) (16•3)•10
=48•10
=480