Common-Core/ Grade 1
Maths MCQ Based On Show addition using doubles plus one
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Common-Core Grade 1 - 1 Show addition using doubles plus one
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13 - 1 = 12
Use double fact for 12
Split 7 as 6+1 and then add 6+6+1.
Add 6 + 7
Split 7 as 6+1
Now,
Add 6+6+1
9-1 =8
Use double fact for 8.
11 - 1 = 10
Use double fact for10
7 -1 = 6
Add same numbers to make 6.
Split 5 as 4+1
Now, 4+5 = 4 +4+1
Doubles of 4 = 8
Split 4 as 3 + 1
Split 6 as 1+5
17 - 1 = 16
Use double fact for 16
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