RESTAR 21 A NÚMEROS DE DOS CIFRAS
9 months ago
carmenv
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10 QuestionsShow answers
  • Question 1
    30 seconds
    Q.

    31-21=

    answer choices

    9

    11

    10

  • Question 2
    30 seconds
    Q.

    35-21=

    answer choices

    15

    14

    11

  • Question 3
    30 seconds
    Q.

    40-21=

    answer choices

    30

    29

    19

  • Question 4
    30 seconds
    Q.

    46-21=

    answer choices

    25

    26

    27

  • Question 5
    30 seconds
    Q.

    53-21=

    answer choices

    32

    33

    31

  • Question 6
    30 seconds
    Q.

    59-21=

    answer choices

    36

    37

    38

  • Question 7
    30 seconds
    Q.

    72-21=

    answer choices

    50

    51

    52

  • Question 8
    30 seconds
    Q.

    66-21=

    answer choices

    46

    45

    44

  • Question 9
    30 seconds
    Q.

    80-21=

    answer choices

    57

    58

    59

  • Question 10
    30 seconds
    Q.

    91-21=

    answer choices

    71

    69

    70

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