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
50 + 20 = ______
49 + 10 = ______
5 × 10 = ______
64 − 10 = ______
19 + 10 = ______
85 − 10 = ______
87 − 10 = ______
77 + 10 = ______
69 + 10 = ______
72 − 10 = ______
40 − 10 = ______
6 × 10 = ______
7 × 10 = ______
52 − 10 = ______
36 − 10 = ______
55 + 20 = ______
50 − 10 = ______
12 + 10 = ______
35 + 20 = ______
8 × 10 = ______
