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
65 + 20 = ______
2 × 10 = ______
7 × 10 = ______
48 − 10 = ______
32 − 10 = ______
86 − 10 = ______
78 + 20 = ______
67 − 10 = ______
84 + 20 = ______
50 + 20 = ______
76 + 20 = ______
9 × 10 = ______
1 × 10 = ______
8 × 10 = ______
63 − 10 = ______
42 − 10 = ______
30 − 10 = ______
84 + 10 = ______
50 + 10 = ______
33 − 10 = ______
