The mistake Lori made when multiplying is that she didn't regroup the 2 in the tens column, which is correct option(A).
Arithmetic operations can also be specified by the subtract, divide, and multiply built-in functions.
The operator that perform arithmetic operation are called arithmetic operators .
Lori solved this multiplication problem.
29 × 31 = 699
The mistake Lori made when multiplying is that she didn't
We first construct the extended multiplication.
The result of multiplying 1 × 9 is 9.
The result of multiplying 1 × 2 is 2
After that, we multiply 3 × 9 to get 27. Since 27 is a two-digit number, we must carry the first digit, 2, to the following column.
Then we carry the digit of 2, which is 8, and multiply 3 × 2, which results in 6.
Finally, we get 899 by adding 870 and 29.
Hence, the mistake Lori made when multiplying is that she didn't regroup the 2 in the tens column.
Learn more about Arithmetic operations here:
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