Cardinal Math

Multi-digit multiplication · sheet 25 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 12 × 3 36 no pattern to catch here
2 95 × 44 4180 3620 leaving out a partial product760 forgetting to shift the second row
3 357 × 7 2499 no pattern to catch here
4 47 × 8 376 no pattern to catch here
5 36 × 16 576 252 forgetting to shift the second row336 leaving out a partial product
6 65 × 8 520 no pattern to catch here
7 28 × 14 392 140 forgetting to shift the second row232 leaving out a partial product
8 44 × 39 1716 1236 leaving out a partial product528 forgetting to shift the second row
9 16 × 5 80 no pattern to catch here
10 46 × 5 230 no pattern to catch here
11 282 × 7 1974 no pattern to catch here
12 91 × 5 455 no pattern to catch here
13 997 × 4 3988 no pattern to catch here
14 164 × 9 1476 no pattern to catch here
15 15 × 93 1395 180 forgetting to shift the second row915 leaving out a partial product
16 49 × 8 392 no pattern to catch here
17 33 × 3 99 no pattern to catch here
18 85 × 73 6205 5615 leaving out a partial product850 forgetting to shift the second row
19 11 × 27 297 207 leaving out a partial product99 forgetting to shift the second row
20 16 × 31 496 306 leaving out a partial product64 forgetting to shift the second row

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