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
58 − 10 = ______
47 + 10 = ______
72 + 20 = ______
45 − 10 = ______
4 × 10 = ______
55 + 10 = ______
85 + 20 = ______
71 − 10 = ______
88 − 10 = ______
84 + 20 = ______
99 − 10 = ______
52 − 10 = ______
78 + 20 = ______
14 + 20 = ______
34 − 10 = ______
6 × 10 = ______
76 + 20 = ______
7 × 10 = ______
85 − 10 = ______
23 + 10 = ______
