Module 1: Topic D

When adding or subtracting decimals it is important to line up the place values and decimal?

• False

• True

• I don't know

1 thousandth + 2 thousandths = ________ thousandths = ________

• 3 thousandths = 0.3

• 3 thousandths = 0.03

• 3 thousandths = 0.030

• 3 thousandths = 0.003

Solve using standard algorithm 0.3 + 0.82 =

• 0.3 + 0.82 = 1.12

• 0.3

  + 0.82

  0.85

• 0.3

  + 0.82

  1.12

• 0.3

  + 0.82

  0.112

12 tenths + 9 tenths = ________ tenths = ________ one(s) ________ tenths

• 21 tenths = 0 ones 21 tenths

• 21 tenths = 20 ones 1 tenths

• 20 tenths = 2 ones 0 tenths

• 21 tenths = 2 ones 1 tenths

When we subtract decimals we have to borrow from the bigger place value when we don't have enough?

• True

• False

• We skip it

5 tenths - 2 tenths = ________ tenths = ________

• 7 tenths = 0.7

• 3 tenths = 0.03

• 3 tenths = 0.3

• 3 tenths = 3

Solve using standard algorithm

1.4 - 0.7 =

• 1.4 - 0.7 = 0.7

• 1.4

  - 0.7

  0.47

• 1.4

  - 0.7

  0.7

• 1.4

  + 0.7

  2.1

57.03 + 2.08 = ?

• 59.11

• 59.83

• 77.83

• 60.1

84.637 - 28.56 = ?

• 56.041

• 56.077

• 81.581

• 80.077

60.91 - 2.856 =

• 56.245

• 3.235

• 32.35

• 58.054