unit 3: small engine mechanics - multi - step word problems worksheet\ndirections: solve each multi - step…

unit 3: small engine mechanics - multi - step word problems worksheet\ndirections: solve each multi - step problem. show all your work and explain your reasoning in complete sentences.\nproblems\n1. a mechanic receives 240 spark plugs. he divides them equally into 12 boxes. later, he sells 4 boxes. how many spark plugs does he have left? 2,880\n2. a shop orders 18 containers of engine oil. each container holds 24 quarts. if each oil change requires 6 quarts, how many oil changes can be performed with the order? 432\n3. a shipment contains 360 washers. the mechanic divides them equally into 15 repair kits. if 3 kits are used for repairs, how many washers are left in inventory?5,400\n4. a mechanic orders 9 crates of air filters. each crate contains 20 filters. if the shop services 12 engines and each engine uses 3 filters, how many filters remain? 183

unit 3: small engine mechanics - multi - step word problems worksheet\ndirections: solve each multi - step problem. show all your work and explain your reasoning in complete sentences.\nproblems\n1. a mechanic receives 240 spark plugs. he divides them equally into 12 boxes. later, he sells 4 boxes. how many spark plugs does he have left? 2,880\n2. a shop orders 18 containers of engine oil. each container holds 24 quarts. if each oil change requires 6 quarts, how many oil changes can be performed with the order? 432\n3. a shipment contains 360 washers. the mechanic divides them equally into 15 repair kits. if 3 kits are used for repairs, how many washers are left in inventory?5,400\n4. a mechanic orders 9 crates of air filters. each crate contains 20 filters. if the shop services 12 engines and each engine uses 3 filters, how many filters remain? 183

Answer

1.

Explanation:

Step1: Find spark - plugs per box

First, find out how many spark - plugs are in each box. We divide the total number of spark - plugs (240) by the number of boxes (12). $240\div12 = 20$ (spark - plugs per box)

Step2: Find number of boxes left

The mechanic sells 4 boxes out of 12. So the number of boxes left is $12 - 4=8$ boxes.

Step3: Find spark - plugs left

Multiply the number of boxes left (8) by the number of spark - plugs per box (20). $8\times20 = 160$ (spark - plugs left)

Answer:

160

2.

Explanation:

Step1: Find total quarts of oil

First, find the total number of quarts of oil in the order. Multiply the number of containers (18) by the number of quarts per container (24). $18\times24=432$ quarts

Step2: Find number of oil - changes

Then, divide the total number of quarts (432) by the number of quarts required per oil - change (6). $432\div6 = 72$ (oil - changes)

Answer:

72

3.

Explanation:

Step1: Find number of washers per repair kit

First, find out how many washers are in each repair kit. Divide the total number of washers (360) by the number of repair kits (15). $360\div15 = 24$ (washers per repair kit)

Step2: Find number of kits left

The mechanic uses 3 kits out of 15. So the number of kits left is $15 - 3 = 12$ kits.

Step3: Find washers left in inventory

Multiply the number of kits left (12) by the number of washers per kit (24). $12\times24=288$ (washers left in inventory)

Answer:

288

4.

Explanation:

Step1: Find total number of air filters

First, find the total number of air filters. Multiply the number of crates (9) by the number of filters per crate (20). $9\times20 = 180$ filters

Step2: Find number of filters used

The shop services 12 engines and each engine uses 3 filters. So the number of filters used is $12\times3=36$ filters.

Step3: Find number of filters remaining

Subtract the number of filters used (36) from the total number of filters (180). $180-36 = 144$ (filters remaining)

Answer:

144