Grade 4 Multi-Digit Multiplication Practice Test

Correct answer: A

The correct answer is $30 \times 6 + 4 \times 6 = 204$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: Break 34 into 30 and 4: $30 \times 6 = 180$ and $4 \times 6 = 24$; $180 + 24 = 204$.
3. Check the product: The correct choice is $30 \times 6 + 4 \times 6 = 204$.

Correct answer: B

The correct answer is $405$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: $27 \times 10 = 270$ and $27 \times 5 = 135$; $270 + 135 = 405$.
3. Check the product: The correct choice is $405$.

Correct answer: C

The correct answer is $300$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: Round 48 to 50, then calculate $50 \times 6 = 300$.
3. Check the product: The correct choice is $300$.

Correct answer: D

The correct answer is $800$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: Round 39 to 40 and 21 to 20: $40 \times 20 = 800$.
3. Check the product: The correct choice is $800$.

Correct answer: A

The correct answer is $6 \times 34 = 34 \times 6$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: The commutative property lets the factors switch order without changing the product.
3. Check the product: The correct choice is $6 \times 34 = 34 \times 6$.

Correct answer: B

The correct answer is $230$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: Multiplying by 10 shifts each digit one place left: $23 \times 10 = 230$.
3. Check the product: The correct choice is $230$.

Correct answer: C

The correct answer is $280$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: $4 \times 7 = 28$; the zero in 40 gives $280$.
3. Check the product: The correct choice is $280$.

Correct answer: D

The correct answer is $412$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: $100 \times 4 = 400$, $3 \times 4 = 12$, and $400 + 12 = 412$.
3. Check the product: The correct choice is $412$.

Correct answer: A

The correct answer is $57$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: Divide 456 by 8: $456 div 8 = 57$.
3. Check the product: The correct choice is $57$.

Correct answer: B

The correct answer is $24 \times 10 + 24 \times 3 = 312$.

1. Set up the multiplication: Identify the factors and line up the place values.
2. Multiply and regroup: Use partial products: $240 + 72 = 312$.
3. Check the product: The correct choice is $24 \times 10 + 24 \times 3 = 312$.