September Number Talks for 4th Grade
Week 1
Focus: Adding multiples of 10 and 100 by keeping one number whole
Day 1:
Day 2:
Day 3:
56 + 40
256 + 100
119 + 200
56 + 50
256 + 300
119 + 400
156 + 40
256 + 340
119 + 406
Week 2
Foci: *Subtracting multiples of 10 and 100 by keeping one number whole
*Adjusting from landmark numbers
Day 1:
Day 2:
Day 3:
543 – 20
50 – 25
100 – 50
543 – 100
50 – 24
100 – 49
543 – 120
50 – 26
100 – 51
Week 3
Foci: Distributive Property and Landmarks
Day 1:
Day 2:
Day 3:
2x5
3 x 26
3 x 39
10 x 5
6 x 26
4 x 39
12 x 5
9 x 26
7 x 39
4x3x2
3x5x4
2 x 10 x 5
6x4x1
2 x 15 x 2
4x5x5
Week 4
Focus: Associative Property
Day 1:
Day 2:
Day 3:
2x3x2
15 x 4
20 x 5
543-240
50 – 19