Cardinal Math

Multi-digit multiplication · sheet 23 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 97 × 12 1164 291 forgetting to shift the second row914 leaving out a partial product
2 97 × 55 5335 4535 leaving out a partial product970 forgetting to shift the second row
3 27 × 4 108 no pattern to catch here
4 78 × 64 4992 4232 leaving out a partial product780 forgetting to shift the second row
5 123 × 2 246 no pattern to catch here
6 26 × 2 52 no pattern to catch here
7 11 × 74 814 121 forgetting to shift the second row704 leaving out a partial product
8 12 × 7 84 no pattern to catch here
9 31 × 5 155 no pattern to catch here
10 18 × 53 954 144 forgetting to shift the second row524 leaving out a partial product
11 381 × 8 3048 no pattern to catch here
12 83 × 27 2241 1621 leaving out a partial product747 forgetting to shift the second row
13 43 × 3 129 no pattern to catch here
14 24 × 4 96 no pattern to catch here
15 34 × 2 68 no pattern to catch here
16 28 × 2 56 no pattern to catch here
17 946 × 4 3784 no pattern to catch here
18 95 × 14 1330 475 forgetting to shift the second row920 leaving out a partial product
19 76 × 81 6156 5606 leaving out a partial product684 forgetting to shift the second row
20 732 × 6 4392 no pattern to catch here

Reading the wrong answers

One wrong answer is a slip. The same pattern on three or more problems is a rule your child is following, and it has a name and a fix. Problems marked "no pattern to catch" are the plain ones; a child who gets only those right is telling you something too.

Leaving out a partial product 8 of 20 problems

Forgetting to shift the second row 8 of 20 problems