tristrl1011 tristrl1011
  • 24-09-2014
  • Mathematics
Answered

what addition doubles fact can help you solve 4+5? explain how you know



Answer :

lilbabyboss123 lilbabyboss123
  • 24-09-2014
4+5=9 because your adding hold up 5 fingers in put 4 more that's 9
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Аноним Аноним
  • 12-09-2019

⇒4+5

=4+4+1----[5=4+1]

=2 × 4 +1

=8+1

= 9

→4+5

=(5-1)+5

 =5+5-1

 =10-1

 =9

Addition Doubles Fact used

→4+4 =8

or

→5+5=10

Answer Link

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