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
11 + 20 = ______
77 + 20 = ______
30 − 10 = ______
69 + 10 = ______
60 − 10 = ______
23 + 20 = ______
59 + 20 = ______
6 × 10 = ______
60 + 10 = ______
2 × 10 = ______
7 × 10 = ______
84 + 10 = ______
33 + 10 = ______
52 − 10 = ______
4 × 10 = ______
38 − 10 = ______
36 − 10 = ______
97 − 10 = ______
65 − 10 = ______
86 + 20 = ______
