How many dots will remain if you subtract the number of dots in the second group from the number of dots in the first group?

10

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15

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18

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5

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Solution

The correct option is A $10$
The first group has $18$ dots $= 1$ ten and $8$ ones.
The second group has $8$ dots $= 8$ ones.
So, the total number dots remaining will be
$18$ dots $- 8$ dots $= 1$ ten and $8$ ones $- 8$ ones
$18$ dots $- 8$ dots $= 1$ ten $= 10.$

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How many dots will remain if you subtract the number of dots in the second group from the number of dots in the first group?

The correct option is A 10The first group has 18 dots =1 ten and 8 ones. The second group has 8 dots =8 ones. So, the total number dots remaining will be 18 dots − 8 dots =1 ten and 8 ones − 8 ones 18 dots − 8 dots =1 ten =10.

The correct option is A $10$
The first group has $18$ dots $= 1$ ten and $8$ ones.
The second group has $8$ dots $= 8$ ones.
So, the total number dots remaining will be
$18$ dots $- 8$ dots $= 1$ ten and $8$ ones $- 8$ ones
$18$ dots $- 8$ dots $= 1$ ten $= 10.$