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
60 + 20 = ______
63 + 10 = ______
1 × 10 = ______
5 × 10 = ______
79 + 20 = ______
34 + 20 = ______
48 + 20 = ______
55 + 10 = ______
61 − 10 = ______
63 − 10 = ______
23 + 20 = ______
88 − 10 = ______
71 − 10 = ______
36 + 20 = ______
84 + 10 = ______
3 × 10 = ______
58 + 10 = ______
65 − 10 = ______
7 × 10 = ______
62 − 10 = ______
