Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
61 − 10 = ______
55 + 20 = ______
40 + 10 = ______
69 + 20 = ______
57 + 10 = ______
3 × 10 = ______
34 − 10 = ______
67 − 10 = ______
40 + 20 = ______
41 − 10 = ______
62 − 10 = ______
7 × 10 = ______
63 + 10 = ______
49 − 10 = ______
22 + 20 = ______
2 × 10 = ______
51 + 10 = ______
1 × 10 = ______
5 × 10 = ______
6 × 10 = ______
