Multi-Digit Multiplication: Trashketball Review Questions
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Multi-Digit Multiplication: Trashketball Review Questions
Trashketball and Around the World questions for multiplying up to four digits by one digit, and two digits by two digits, Grade 4: 24 numbered questions to read aloud or project, such as 46 × 7. With an answer key, for any no-tech review game.
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Teach it first
Multiplying by a One-Digit NumberA teaching handout to hand out before this sheet: the rule, worked examples and common mistakes.Long Multiplication by a Two-Digit NumberA teaching handout to hand out before this sheet: the rule, worked examples and common mistakes.- Pages
- 2
- Last updated
- Time
- About 20 minutes
- Answer key
- Included
- Printing
- Black and white
- Related curriculum
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Multiply two- and three-digit numbers by one- and two-digit numbers, with area models and the standard algorithm.
Reviewed by Mrs. Catherine Reynolds, Teacher. How we check worksheets
How to use this sheet
- Have the child estimate first, rounding each factor. It catches a misplaced zero or digit.
- Start with the area model sheets, then move to the column method, so the partial products make sense.
- Use squared paper so each digit, and each regrouped digit, has its own square.
Common mistakes
- Forgetting the placeholder zero in the second row of a 2-digit by 2-digit problem. The tens digit multiplies by tens.
- Adding the carried digit before multiplying instead of after. Multiply first, then add what was carried.
- Multiplying only the matching places, so 23 × 14 is 2 × 1 and 3 × 4, giving 212. Every digit multiplies every digit.
