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
83 + 10 = ______
67 + 10 = ______
35 + 20 = ______
7 × 10 = ______
55 + 10 = ______
24 + 20 = ______
68 − 10 = ______
36 − 10 = ______
4 × 10 = ______
6 × 10 = ______
67 + 20 = ______
29 + 20 = ______
60 + 20 = ______
41 − 10 = ______
2 × 10 = ______
79 + 20 = ______
75 + 20 = ______
79 − 10 = ______
8 × 10 = ______
63 − 10 = ______
