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
71 + 20 = ______
8 × 10 = ______
98 − 10 = ______
20 + 10 = ______
22 − 10 = ______
81 − 10 = ______
36 + 20 = ______
27 + 20 = ______
52 + 20 = ______
9 × 10 = ______
89 − 10 = ______
85 + 10 = ______
39 + 10 = ______
30 + 20 = ______
4 × 10 = ______
36 − 10 = ______
26 − 10 = ______
74 + 20 = ______
39 + 20 = ______
56 − 10 = ______
