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
1 × 10 = ______
9 × 10 = ______
33 + 20 = ______
3 × 10 = ______
7 × 10 = ______
87 + 10 = ______
69 + 20 = ______
85 − 10 = ______
31 − 10 = ______
85 + 10 = ______
16 + 10 = ______
53 + 10 = ______
59 + 10 = ______
78 + 20 = ______
35 − 10 = ______
98 − 10 = ______
40 + 20 = ______
71 + 20 = ______
77 − 10 = ______
60 + 20 = ______
