Cardinal Math

Multi-digit multiplication · sheet 27 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 65 × 98 6370 1105 forgetting to shift the second row5440 leaving out a partial product
2 89 × 5 445 no pattern to catch here
3 83 × 3 249 no pattern to catch here
4 72 × 8 576 no pattern to catch here
5 19 × 6 114 no pattern to catch here
6 793 × 2 1586 no pattern to catch here
7 59 × 8 472 no pattern to catch here
8 83 × 57 4731 4021 leaving out a partial product996 forgetting to shift the second row
9 96 × 19 1824 954 leaving out a partial product960 forgetting to shift the second row
10 987 × 2 1974 no pattern to catch here
11 13 × 32 416 306 leaving out a partial product65 forgetting to shift the second row
12 79 × 67 5293 1027 forgetting to shift the second row4263 leaving out a partial product
13 88 × 63 5544 4824 leaving out a partial product792 forgetting to shift the second row
14 46 × 2 92 no pattern to catch here
15 68 × 68 4624 3664 leaving out a partial product952 forgetting to shift the second row
16 71 × 6 426 no pattern to catch here
17 55 × 5 275 no pattern to catch here
18 353 × 7 2471 no pattern to catch here
19 45 × 16 720 315 forgetting to shift the second row430 leaving out a partial product
20 175 × 3 525 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