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
85 − 10 = ______
31 − 10 = ______
21 + 10 = ______
23 + 20 = ______
37 + 10 = ______
8 × 10 = ______
81 + 20 = ______
86 − 10 = ______
4 × 10 = ______
47 + 10 = ______
75 − 10 = ______
59 + 20 = ______
7 × 10 = ______
69 + 10 = ______
5 × 10 = ______
52 − 10 = ______
71 + 10 = ______
61 + 10 = ______
33 + 10 = ______
25 − 10 = ______
