Cardinal Math

Multi-digit multiplication · sheet 28 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 94 × 43 4042 3612 leaving out a partial product658 forgetting to shift the second row
2 11 × 23 253 203 leaving out a partial product55 forgetting to shift the second row
3 37 × 55 2035 1535 leaving out a partial product370 forgetting to shift the second row
4 37 × 2 74 no pattern to catch here
5 335 × 9 3015 no pattern to catch here
6 24 × 75 1800 1420 leaving out a partial product288 forgetting to shift the second row
7 44 × 67 2948 2428 leaving out a partial product572 forgetting to shift the second row
8 763 × 7 5341 no pattern to catch here
9 688 × 5 3440 no pattern to catch here
10 37 × 5 185 no pattern to catch here
11 593 × 4 2372 no pattern to catch here
12 42 × 3 126 no pattern to catch here
13 83 × 77 6391 1162 forgetting to shift the second row5621 leaving out a partial product
14 66 × 3 198 no pattern to catch here
15 16 × 8 128 no pattern to catch here
16 47 × 3 141 no pattern to catch here
17 35 × 8 280 no pattern to catch here
18 88 × 2 176 no pattern to catch here
19 26 × 79 2054 1454 leaving out a partial product416 forgetting to shift the second row
20 41 × 41 1681 1601 leaving out a partial product205 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