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
50 + 20 = ______
86 − 10 = ______
19 + 20 = ______
81 − 10 = ______
35 + 20 = ______
59 + 20 = ______
62 + 20 = ______
56 + 20 = ______
2 × 10 = ______
22 − 10 = ______
36 − 10 = ______
85 − 10 = ______
97 − 10 = ______
1 × 10 = ______
28 − 10 = ______
73 − 10 = ______
5 × 10 = ______
81 + 10 = ______
40 + 20 = ______
69 + 10 = ______
