Cardinal Math

Multi-digit multiplication · sheet 26 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 46 × 77 3542 2842 leaving out a partial product644 forgetting to shift the second row
2 58 × 25 1450 1040 leaving out a partial product406 forgetting to shift the second row
3 46 × 7 322 no pattern to catch here
4 43 × 21 903 129 forgetting to shift the second row803 leaving out a partial product
5 32 × 98 3136 2716 leaving out a partial product544 forgetting to shift the second row
6 481 × 2 962 no pattern to catch here
7 538 × 6 3228 no pattern to catch here
8 24 × 89 2136 1636 leaving out a partial product408 forgetting to shift the second row
9 43 × 7 301 no pattern to catch here
10 12 × 7 84 no pattern to catch here
11 974 × 6 5844 no pattern to catch here
12 85 × 91 7735 7205 leaving out a partial product850 forgetting to shift the second row
13 141 × 3 423 no pattern to catch here
14 46 × 4 184 no pattern to catch here
15 53 × 4 212 no pattern to catch here
16 22 × 9 198 no pattern to catch here
17 52 × 58 3016 2516 leaving out a partial product676 forgetting to shift the second row
18 79 × 9 711 no pattern to catch here
19 32 × 4 128 no pattern to catch here
20 15 × 31 465 305 leaving out a partial product60 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