Mental Math Test

Whats 90x90

Answer explanation

9x9 = 81

add 2 zero's =8100

Therefore, answer is 8100

Tags

CCSS.4.NBT.B.5

50x2x5x7

Answer explanation

50x2 is 100 x 5 is 500 x 7= 3500

Tags

CCSS.5.NBT.B.5

80x60

Answer explanation

8x6=48 add 2 Zero's = 4800

Tags

CCSS.4.NBT.B.5

Jim Had 50 dollars. He Got A Profit Of 5 Times The Amount He Had Before. He Spent $100 on a Washing Machine. He Also Spend $50 On A Camera Drone. How Much Does He Have?

Answer explanation

50x 5 = 250. 250-100 = 150. 150-50=100

Tags

CCSS.7.EE.B.3

((15+(-5))/2) x (5x5-5)

Answer explanation

+- = -

We Will Use BODMAS

15-5 = 10/2=5X(5X5-5)=5X(25-5)

=5X20

=100

Tags

CCSS.7.EE.B.3