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 + 20 = ______
85 − 10 = ______
81 − 10 = ______
65 + 20 = ______
6 × 10 = ______
28 + 10 = ______
4 × 10 = ______
64 + 20 = ______
5 × 10 = ______
1 × 10 = ______
91 − 10 = ______
40 − 10 = ______
58 − 10 = ______
40 + 20 = ______
3 × 10 = ______
2 × 10 = ______
62 + 20 = ______
23 + 10 = ______
80 + 20 = ______
42 + 10 = ______
