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
44 + 10 = ______
65 + 20 = ______
70 + 20 = ______
60 − 10 = ______
50 − 10 = ______
35 − 10 = ______
86 + 10 = ______
21 + 20 = ______
6 × 10 = ______
91 − 10 = ______
67 + 10 = ______
58 + 20 = ______
5 × 10 = ______
76 + 20 = ______
23 − 10 = ______
73 − 10 = ______
69 − 10 = ______
26 + 10 = ______
83 + 20 = ______
89 + 20 = ______
