Fourth-grade mathematics starts with two-digit multiplication, which makes it difficult to calculate, and vertical mathematics makes mistakes if you don’t pay attention. This 100-question multiplication exercise covers two digits multiplied by one digit, two digits multiplied by two digits, complete with answers, and ready to print.
The “three-digit by two-digit” in the fourth grade book is the highlight of calculation teaching, but many children’s problems actually come from the more basic two-digit multiplication: carry plus error, zero in the middle will not be processed, and the position of the product is miswritten.
Practice Structure
- First 50 questions: Multiply two digits by one digit to consolidate the multiplication formula and carry;
- Last 50 questions: 2 digits multiplied by 2 digits, training a complete vertical process;
- All with answers, including tips for error-prone points.
Double Digit Multiplier Double Digit Vertical Mouth Art
“After multiplying by one digit, write one digit, after multiplying by ten digits, move one digit to the left, and the two products add up to the result.” Remember these three sentences, the vertical style is basically not wrong. Special reminder: When multiplying a number on ten digits, the end of the result should be blank.
Common Mistakes
- Forgetting to add the carry bit: after each step, add the carry bit first and then write the result;
- Processing of 0: any number × 0 gets 0, do not forget to write;
- Copy the wrong number: Read the question before writing, and look back afterwards.
After completing this 100 questions in 10 days, the child’s multiplication calculation speed and accuracy can be significantly improved.
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