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
80 + 20 = ______
20 + 10 = ______
17 + 10 = ______
56 + 10 = ______
11 + 10 = ______
31 + 20 = ______
72 + 20 = ______
5 × 10 = ______
96 − 10 = ______
9 × 10 = ______
33 − 10 = ______
3 × 10 = ______
74 + 20 = ______
1 × 10 = ______
33 + 20 = ______
70 + 20 = ______
2 × 10 = ______
49 − 10 = ______
95 − 10 = ______
57 + 20 = ______
