Solve.
4,563 + 868 = 3,564 − 1,258 = 8,504 − 2,469 =
Round each number to the nearest 10.
42 → 27 → 54 →
217 → 334 → 297 →
The model shown can represent two number sentences.
Which two number sentences can the model represent?
4 × 4 = __
4 + 4 = __
4 × 2 = __
2 + 2 + 2 + 2 = __
2 × 4 = __
2 × 2 × 2 × 2 = __
4 + 4 + 4 = __
Which expression matches the model?
(2 × 5) + (3 × 4)
(2 × 6) + (4 × 3)
(2 × 5) + (3 × 3)
(3 × 6) + (4 × 4)