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 − 10 = ______
12 + 20 = ______
89 + 20 = ______
42 − 10 = ______
4 × 10 = ______
25 + 10 = ______
96 − 10 = ______
2 × 10 = ______
5 × 10 = ______
84 + 20 = ______
55 + 20 = ______
66 − 10 = ______
6 × 10 = ______
3 × 10 = ______
34 − 10 = ______
18 + 20 = ______
57 − 10 = ______
58 + 20 = ______
26 + 20 = ______
73 + 20 = ______
