Percentage Change

In a wetland, 400 birds were observed in 2018 and 450 birds were observed in 2019. Find the change of the no. of birds.

• increased by 50

• increased by 12.5%

• decreased by 50

• decreased by 12.5%

Tags

CCSS.7.NS.A.1

CCSS.7.NS.A.3

CCSS.7.RP.A.3

In a wetland, 400 birds are observed in 2018 and 450 birds are observed in 2019. Find the percentage change of the no. of birds.

• decreased by 12.5%

• increased by 50

• increased by 12.5%

• increased by 50%

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.3

The height of Tom is 132cm. He is 10% taller than last year. What is his height last year?

• 118.8 cm

• 119 cm

• 122 cm

• 120 cm

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

The fee of lunch was $40 per head. It becomes $30 per head this year. Find the change.

• decreased by $10

• decreased by 10%

• decreased by 25%

• increased by $10

Tags

CCSS.7.EE.B.3

CCSS.7.NS.A.1

CCSS.7.NS.A.3

CCSS.7.RP.A.3

The fee of lunch was $40 per head. It becomes $30 per head this year. Find the percentage decrease.

• $10

• 10%

• 25%

• -25%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Mr Tam can finish 3000m in 20 min last year and he can do it in 18 min this year. What is the change?

• 2 min

• -2 min

• 10%

• -10%

Tags

CCSS.7.EE.B.3

CCSS.7.NS.A.1

CCSS.7.NS.A.3

Mr Tam can finish 3000m in 20 min last year and he can do it in 18 min this year. Find the percentage change.

• 10 min

• -10 min

• 10%

• -10%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3