Cardinal Math

Multi-digit multiplication · sheet 1 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 68 × 61 4148 3608 leaving out a partial product476 forgetting to shift the second row
2 581 × 9 5229 no pattern to catch here
3 16 × 7 112 no pattern to catch here
4 26 × 6 156 no pattern to catch here
5 59 × 96 5664 4554 leaving out a partial product885 forgetting to shift the second row
6 176 × 8 1408 no pattern to catch here
7 25 × 7 175 no pattern to catch here
8 17 × 4 68 no pattern to catch here
9 85 × 82 6970 6410 leaving out a partial product850 forgetting to shift the second row
10 67 × 4 268 no pattern to catch here
11 763 × 9 6867 no pattern to catch here
12 91 × 36 3276 2706 leaving out a partial product819 forgetting to shift the second row
13 23 × 32 736 115 forgetting to shift the second row606 leaving out a partial product
14 35 × 8 280 no pattern to catch here
15 26 × 43 1118 182 forgetting to shift the second row818 leaving out a partial product
16 678 × 5 3390 no pattern to catch here
17 61 × 7 427 no pattern to catch here
18 65 × 29 1885 1245 leaving out a partial product715 forgetting to shift the second row
19 18 × 4 72 no pattern to catch here
20 24 × 62 1488 1208 leaving out a partial product192 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