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
81 − 10 = ______
67 + 20 = ______
14 + 20 = ______
69 + 10 = ______
50 − 10 = ______
4 × 10 = ______
77 + 10 = ______
59 + 10 = ______
39 + 20 = ______
30 − 10 = ______
58 − 10 = ______
21 + 10 = ______
46 + 20 = ______
41 − 10 = ______
46 + 10 = ______
40 + 10 = ______
1 × 10 = ______
33 − 10 = ______
37 + 20 = ______
96 − 10 = ______
