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
81 + 20 = ______
9 × 10 = ______
85 − 10 = ______
21 + 10 = ______
60 + 10 = ______
78 + 10 = ______
69 + 10 = ______
88 + 10 = ______
3 × 10 = ______
22 − 10 = ______
70 + 10 = ______
33 + 10 = ______
7 × 10 = ______
87 + 10 = ______
34 − 10 = ______
98 − 10 = ______
90 − 10 = ______
1 × 10 = ______
84 + 10 = ______
78 − 10 = ______
