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
57 + 20 = ______
31 − 10 = ______
65 + 10 = ______
62 + 10 = ______
6 × 10 = ______
54 − 10 = ______
16 + 20 = ______
3 × 10 = ______
85 + 10 = ______
42 − 10 = ______
5 × 10 = ______
42 + 20 = ______
90 − 10 = ______
54 + 10 = ______
76 − 10 = ______
18 + 10 = ______
60 + 10 = ______
29 − 10 = ______
56 − 10 = ______
86 + 20 = ______
