mental arithmetic exercise

Calculate the following: 67+55+71+77+98+22

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Calculate the following: 12+53+13+79+21+43

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What are the prime factors 40? (factors of 40 that are prime)

Calculate the sum of the following: 1+2+3+4+5+...+100

• 5000

• 5005

• 5050

• 5500

Convert 0.22 into percentage (include % symbol)

Convert the recurring decimal 0.333333... into fraction (use format x/y)

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Which of the following is the compound interest formula?

Order the following decimals in ascending order: 0.3, 0.71, 0.701, 0.03 (use format a, b, c, d)

Tags

CCSS.5.NBT.A.3B

Given that (x-5)(x+1)=0, find x

• x=-5,1

• x=5,-1

• x=5,1

• x=-5,-1

Tags

CCSS.HSA-REI.B.4B

Which of the following sequences are correct?

• DABMOS

• BADMOS

• ABDMOS

• BODMAS

Tags

CCSS.7.NS.A.1D