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
19 + 10 = ______
80 + 20 = ______
22 + 20 = ______
91 − 10 = ______
83 + 10 = ______
2 × 10 = ______
58 + 10 = ______
5 × 10 = ______
79 − 10 = ______
6 × 10 = ______
45 + 10 = ______
34 + 10 = ______
33 + 20 = ______
11 + 20 = ______
84 − 10 = ______
81 − 10 = ______
69 − 10 = ______
43 + 20 = ______
36 + 10 = ______
42 − 10 = ______
