05. Long Multiplication

Question 1

LEVEL 3

Using long multiplication, calculate the following:

$118\times118$

Select the correct answer from the options below:

A: $13225$

B: $13644$

C: $13456$

D: $13924$

CORRECT ANSWER:  D: $13924$

WORKED SOLUTION:

We can split the calculation up into steps, so

$100\times118=11,800$

$10\times118=1,180$

$8\times118=944$

Adding together the results

$11,800+1,180+944=13,924$

ANSWER:  D: $13924$

Question 2

LEVEL 3

Using long multiplication, calculate the following:

$365\times25$

Select the correct answer from the options below:

A: $8760$

B: $9125$

C: $9425$

D: $8940$

CORRECT ANSWER: B: $9125$

WORKED SOLUTION:

We can split the calculation up into steps, so

$20\times365=7,300$

$5\times365=1,825$

Adding together the results

$7,300+1,825=9,125$

ANSWER:  B: $9,125$

Question 3

LEVEL 3

Using long multiplication, calculate the following:

$212\times32$

Select the correct answer from the options below:

A: $6784$

B: $6812$

C: $6644$

D: $6720$

CORRECT ANSWER:  A: $6784$

WORKED SOLUTION:

We can split the calculation up into steps, so

$30\times212=6360$

$2\times212=424$

Adding together the results

$6360+424=6784$

ANSWER:  A: $6784$

Question 4

LEVEL 3

Using long multiplication, calculate the following:

$651\times24$

Select the correct answer from the options below:

A: $15624$

B: $15344$

C: $15862$

D: $15604$

CORRECT ANSWER: A: $15624$

WORKED SOLUTION:

We can split the calculation up into steps, so

$20\times651=13020$

$4\times651=2604$

Adding together the results

$13,020+2,604=15624$

ANSWER:  A: $15624$

Question 5

LEVEL 3

Using long multiplication, calculate the following:

$101\times39$

Select the correct answer from the options below:

A: $3762$

B: $4018$

C: $3852$

D: $3939$

CORRECT ANSWER: D: $3939$

WORKED SOLUTION:

We can split the calculation up into steps, so

$100\times39=3900$

$1\times39=39$

Adding together the results

$3900+39=3939$

ANSWER:  D: $3939$