Estimating Sums & Differences, Adding & Subtracting Decimals

A (n) ______________ is an approximate answer

• sum

• estimate

• product

In the equation 497.55 - 265.41 = 232.14, the number 232.14 is the _________________

• difference

• quotient

• compatible numbers

To _______________ means to add as an extra part

• divide

• annex

• solve

In the equation 8.9 + 55.2 = 64.10, the number 64.10 is the _________________

• difference

• sum

• product

Round to the nearest whole number to solve:

41.10 + 36.54 = __________

• 77

• 77.64

• 78

Round to the nearest whole number to solve:

85.31 + 44.17 = __________

• 129

• 130

• 120

Round to the nearest whole number to solve:

676.93 - 8.12 = __________

• 668.81

• 669

• 670

Round to the nearest whole number to solve:

30.445 - 15.79 = __________

• 14.655

• 17

• 14

Add or subtract the decimals to solve the problem. Annex a zero or zeros if needed:

6 + 5.2 = ________________

• 10.2

• 11.2

• 12.2

Add or subtract the decimals to solve the problem. Annex a zero or zeros if needed:

19.67 + 16.878 = ________________

• 37.854

• 36.558

• 36.548