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
23 + 20 = ______
82 + 20 = ______
64 + 10 = ______
98 − 10 = ______
50 + 20 = ______
57 + 20 = ______
67 − 10 = ______
3 × 10 = ______
60 + 10 = ______
56 + 20 = ______
65 + 10 = ______
81 − 10 = ______
1 × 10 = ______
56 + 10 = ______
95 − 10 = ______
7 × 10 = ______
24 + 20 = ______
30 + 20 = ______
39 − 10 = ______
46 − 10 = ______
