Cardinal Math

Multi-digit multiplication · sheet 24 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 642 × 2 1284 no pattern to catch here
2 81 × 8 648 no pattern to catch here
3 958 × 2 1916 no pattern to catch here
4 32 × 38 1216 352 forgetting to shift the second row916 leaving out a partial product
5 76 × 3 228 no pattern to catch here
6 95 × 6 570 no pattern to catch here
7 32 × 4 128 no pattern to catch here
8 58 × 44 2552 2032 leaving out a partial product464 forgetting to shift the second row
9 354 × 3 1062 no pattern to catch here
10 13 × 71 923 104 forgetting to shift the second row703 leaving out a partial product
11 53 × 56 2968 2518 leaving out a partial product583 forgetting to shift the second row
12 19 × 3 57 no pattern to catch here
13 633 × 6 3798 no pattern to catch here
14 66 × 78 5148 4248 leaving out a partial product990 forgetting to shift the second row
15 46 × 61 2806 2406 leaving out a partial product322 forgetting to shift the second row
16 57 × 3 171 no pattern to catch here
17 15 × 89 1335 255 forgetting to shift the second row845 leaving out a partial product
18 27 × 96 2592 1842 leaving out a partial product405 forgetting to shift the second row
19 78 × 9 702 no pattern to catch here
20 66 × 6 396 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