word problem 2

Last year, Mr. Lee planted 4 rows of tomatoes with 12 plants in each row. This year, he plans to plant twice as many rows with twice as many tomato plants in each row. How many tomato plants will he plant this year?

• 240

• 192

• 360

• 720

Answer explanation

Last year, Mr. Lee had 4 rows with 12 plants each, totaling 48 plants. This year, he will plant twice as many rows (8) and twice as many plants per row (24), resulting in 8 x 24 = 192 plants.

Tags

CCSS.4.OA.A.1

Last year, Mr. Lee planted 5 rows of tomatoes with 12 plants in each row. This year, he plans to plant twice as many rows with twice as many tomato plants in each row. How many tomato plants will he plant this year?

• 240

• 180

• 360

• 720

Answer explanation

Last year, Mr. Lee had 5 rows with 12 plants each, totaling 60 plants. This year, he will plant twice as many rows (10) and twice as many plants per row (24), resulting in 10 x 24 = 240 plants.

Tags

CCSS.4.OA.A.1

Last year, Mrs. Kim planted 5 rows of carrots with 10 plants in each row. This year, she plans to plant twice as many rows with twice as many carrot plants in each row. How many carrot plants will she plant this year?

• 200

• 180

• 360

• 720

Answer explanation

Last year, Mrs. Kim planted 5 rows with 10 plants each, totaling 50 plants. This year, she will plant twice as many rows (10) and twice as many plants per row (20), resulting in 10 x 20 = 200 plants.

Tags

CCSS.4.OA.A.1

Mrs. Kim harvested 8 rows of tomatoes last year, with 12 plants in each row. This year, she wants to plant twice as many rows, with twice as many tomato plants in each row. How many tomato plants will she plant this year?

• 384

• 288

• 432

• 576

Answer explanation

Mrs. Kim harvested 8 rows with 12 plants each, totaling 96 plants. This year, she will plant 16 rows (8x2) with 24 plants each (12x2), resulting in 16x24 = 384 plants. Thus, the correct answer is 384.

Tags

CCSS.4.OA.A.1

Last year, Mr. Lee planted 10 rows of carrots, with 15 plants in each row. This year, he plans to plant twice as many rows, with twice as many carrot plants in each row. How many carrot plants will he plant this year?

• 600

• 900

• 1,125

• 1,800

Answer explanation

Last year, Mr. Lee planted 10 rows with 15 plants each, totaling 150 plants. This year, he will plant 20 rows with 30 plants each (twice as many), resulting in 20 x 30 = 600 plants. Thus, the correct answer is 600.

Tags

CCSS.4.OA.A.1