The following are resources that may be used and adapted to fit the needs of your class.

Loop cards

Patterns (Y4)
Money (Y5)
10, 100, 1000 (Y6) Part 1
10, 100, 1000 (Y6) Part 2

Cards

False cards
True cards

Grids

3 by 4 blank grid

Mental/oral starters

Suggestions
Suggestions (Y6)
Activities (with details)

Target boards

0 - 20
Divisibilty by 3 and 4
Place value
Place value (Y3)
Multiples of 5 (Y3)
Multiplication by 10 (Y4)
Multiplication/division by multiples of 10 (Y5)
Multiplication by 10, 100, 1000 (Y6)
Metric length equivalents (Y6)

Number folds

0 - 9 digits
Ideas for questions (Y5)
Ideas for questions (Y6)

Games

Bingo
1 - 10 Bingo grids
2 by 2 Bingo grids
Subtraction dice Bingo
Bingo numbers (1 more or 1 less)
Odd/even
Times 4
Place value