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
69 + 20 = ______
61 + 10 = ______
57 − 10 = ______
47 + 10 = ______
60 − 10 = ______
80 + 20 = ______
95 − 10 = ______
69 − 10 = ______
85 + 20 = ______
8 × 10 = ______
32 − 10 = ______
26 − 10 = ______
50 + 20 = ______
5 × 10 = ______
3 × 10 = ______
45 + 20 = ______
86 − 10 = ______
29 + 20 = ______
76 + 10 = ______
33 + 20 = ______
