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
67 + 10 = ______
11 + 10 = ______
18 + 20 = ______
85 + 20 = ______
56 − 10 = ______
32 + 20 = ______
71 − 10 = ______
18 + 10 = ______
76 + 10 = ______
79 − 10 = ______
19 + 20 = ______
74 − 10 = ______
37 − 10 = ______
4 × 10 = ______
5 × 10 = ______
12 + 20 = ______
6 × 10 = ______
77 + 20 = ______
8 × 10 = ______
60 + 20 = ______
