Cardinal Math

Multi-digit multiplication · sheet 6 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 68 × 4 272 no pattern to catch here
2 37 × 5 185 no pattern to catch here
3 53 × 83 4399 4009 leaving out a partial product583 forgetting to shift the second row
4 62 × 5 310 no pattern to catch here
5 962 × 9 8658 no pattern to catch here
6 12 × 9 108 no pattern to catch here
7 453 × 8 3624 no pattern to catch here
8 124 × 5 620 no pattern to catch here
9 21 × 3 63 no pattern to catch here
10 99 × 95 9405 1386 forgetting to shift the second row8145 leaving out a partial product
11 47 × 94 4418 3628 leaving out a partial product611 forgetting to shift the second row
12 28 × 96 2688 1848 leaving out a partial product420 forgetting to shift the second row
13 175 × 4 700 no pattern to catch here
14 44 × 38 1672 1232 leaving out a partial product484 forgetting to shift the second row
15 71 × 7 497 no pattern to catch here
16 64 × 79 5056 1024 forgetting to shift the second row4236 leaving out a partial product
17 84 × 66 5544 1008 forgetting to shift the second row4824 leaving out a partial product
18 61 × 9 549 no pattern to catch here
19 64 × 71 4544 4204 leaving out a partial product512 forgetting to shift the second row
20 14 × 7 98 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