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
28 − 10 = ______
7 × 10 = ______
78 + 20 = ______
47 + 20 = ______
9 × 10 = ______
1 × 10 = ______
89 + 10 = ______
4 × 10 = ______
58 − 10 = ______
66 − 10 = ______
84 − 10 = ______
96 − 10 = ______
47 + 10 = ______
52 + 20 = ______
63 + 10 = ______
80 + 10 = ______
95 − 10 = ______
52 + 10 = ______
23 + 20 = ______
37 + 20 = ______
