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
24 + 20 = ______
51 − 10 = ______
34 − 10 = ______
73 − 10 = ______
21 − 10 = ______
81 + 10 = ______
29 + 20 = ______
67 + 10 = ______
30 + 10 = ______
22 − 10 = ______
72 − 10 = ______
11 + 10 = ______
5 × 10 = ______
31 + 20 = ______
37 + 10 = ______
51 + 10 = ______
95 − 10 = ______
57 + 20 = ______
41 + 20 = ______
9 × 10 = ______
