EXERCISES:

WRITE THE NUMBERS:
15-                                  3-                             41-
50-                                67-                             38-
13-                                11-                              6-
81-                                93-                            84-
25-                                18-                            23-
46-
HOW MUCH IS:
seven plus eight:                 three plus four:                two plus nine:
fifteen plus one:                  nine plus nine:
fifteen divided three:                 twenty divided four:
ten divided two:           twelve divided four:         eighteen divided three:
five times five:             three times three:              three times four:
five times three:           ten times four:
forty-two minus six:           seventeen minus five:        nine minus seven:
ten minus five:                    thirteen minus six: