Cardinal Math

Multi-digit multiplication · sheet 8 of 30

Answer key

The answer, and what a wrong answer means.

The sheet
#ProblemAnswerIf they wrote…
1 19 × 4 76 no pattern to catch here
2 66 × 9 594 no pattern to catch here
3 71 × 18 1278 639 forgetting to shift the second row708 leaving out a partial product
4 881 × 7 6167 no pattern to catch here
5 57 × 62 3534 3014 leaving out a partial product456 forgetting to shift the second row
6 37 × 7 259 no pattern to catch here
7 676 × 8 5408 no pattern to catch here
8 88 × 8 704 no pattern to catch here
9 34 × 56 1904 1524 leaving out a partial product374 forgetting to shift the second row
10 52 × 65 3380 3010 leaving out a partial product572 forgetting to shift the second row
11 53 × 11 583 106 forgetting to shift the second row503 leaving out a partial product
12 56 × 4 224 no pattern to catch here
13 31 × 7 217 no pattern to catch here
14 214 × 5 1070 no pattern to catch here
15 87 × 71 6177 5607 leaving out a partial product696 forgetting to shift the second row
16 32 × 2 64 no pattern to catch here
17 35 × 4 140 no pattern to catch here
18 46 × 76 3496 2836 leaving out a partial product598 forgetting to shift the second row
19 79 × 61 4819 4209 leaving out a partial product553 forgetting to shift the second row
20 652 × 4 2608 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