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
62 + 10 = ______
72 + 20 = ______
89 + 10 = ______
19 + 20 = ______
9 × 10 = ______
7 × 10 = ______
1 × 10 = ______
33 + 20 = ______
35 + 20 = ______
71 + 10 = ______
75 − 10 = ______
32 + 10 = ______
6 × 10 = ______
72 − 10 = ______
67 + 10 = ______
42 − 10 = ______
78 − 10 = ______
69 − 10 = ______
3 × 10 = ______
76 − 10 = ______
