Cardinal Math

Multi-digit multiplication · sheet 22 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 93 × 7 651 no pattern to catch here
2 24 × 8 192 no pattern to catch here
3 18 × 8 144 no pattern to catch here
4 648 × 5 3240 no pattern to catch here
5 28 × 3 84 no pattern to catch here
6 454 × 9 4086 no pattern to catch here
7 95 × 7 665 no pattern to catch here
8 241 × 6 1446 no pattern to catch here
9 71 × 7 497 no pattern to catch here
10 749 × 7 5243 no pattern to catch here
11 52 × 17 884 416 forgetting to shift the second row514 leaving out a partial product
12 62 × 98 6076 1054 forgetting to shift the second row5416 leaving out a partial product
13 67 × 76 5092 4242 leaving out a partial product871 forgetting to shift the second row
14 91 × 11 1001 182 forgetting to shift the second row901 leaving out a partial product
15 93 × 25 2325 1815 leaving out a partial product651 forgetting to shift the second row
16 45 × 4 180 no pattern to catch here
17 68 × 6 408 no pattern to catch here
18 64 × 48 3072 2432 leaving out a partial product768 forgetting to shift the second row
19 93 × 76 7068 1209 forgetting to shift the second row6318 leaving out a partial product
20 42 × 33 1386 1206 leaving out a partial product252 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