Estimating Equations

Solve this equation

a - 2.1 = 5.8

• a = 7.9

• a = 3.7

• a = 5.8

• None of these match my answer

Please solve this equation

^p/₅ = 7

• p = 35

• p = 12

• p = 2

• None of these match my answer

Please solve this equation

23 = x + 7

• x = 16

• x = 30

• x = 161

• None of these match my answer

2) Solve this equation

t - 7 = 2

• t = 9

• t = 7

• t = 5

• None of these match my answer

• 900

• 9,000

• 90,000

• 9,000,000

Estimate 79 × 391

• 80 × 400 = 32,000

• 80 × 400 = 36,000

• 70 × 400 = 28,000

• 70 ×300 = 21,000

• 12,000

• 10,000

• 8,000

• 9,417

Which shows the best estimate to find 62 x 77?

• 60 x 70 = 4,200

• 60 x 80 = 4,800

• 65 x 75 = 4,875

• 62 x 100 = 6,200

• A

• B

• C

• D

Solve this equation

c - 1 = 8

• c = 9

• c = 7

• c = 8

• None of these match my answer