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
33 + 10 = ______
34 + 20 = ______
71 + 20 = ______
52 + 20 = ______
8 × 10 = ______
9 × 10 = ______
93 − 10 = ______
72 + 10 = ______
78 + 20 = ______
55 − 10 = ______
1 × 10 = ______
61 + 10 = ______
4 × 10 = ______
75 + 20 = ______
74 + 10 = ______
6 × 10 = ______
47 − 10 = ______
67 + 20 = ______
79 − 10 = ______
26 + 20 = ______
