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
77 + 20 = ______
89 − 10 = ______
77 + 10 = ______
39 − 10 = ______
86 + 10 = ______
85 − 10 = ______
11 + 20 = ______
5 × 10 = ______
80 + 10 = ______
52 + 20 = ______
56 + 10 = ______
8 × 10 = ______
2 × 10 = ______
7 × 10 = ______
18 + 10 = ______
52 + 10 = ______
4 × 10 = ______
29 + 10 = ______
63 + 10 = ______
84 − 10 = ______
