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
30 + 20 = ______
89 − 10 = ______
42 + 20 = ______
16 + 10 = ______
8 × 10 = ______
1 × 10 = ______
54 − 10 = ______
67 − 10 = ______
77 + 10 = ______
4 × 10 = ______
20 + 10 = ______
2 × 10 = ______
6 × 10 = ______
88 − 10 = ______
91 − 10 = ______
62 + 20 = ______
55 − 10 = ______
98 − 10 = ______
36 + 20 = ______
71 + 20 = ______
