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
17 + 20 = ______
18 + 20 = ______
88 + 10 = ______
22 − 10 = ______
7 × 10 = ______
1 × 10 = ______
87 + 10 = ______
2 × 10 = ______
23 − 10 = ______
83 + 20 = ______
21 + 20 = ______
81 + 10 = ______
81 − 10 = ______
84 + 20 = ______
78 + 10 = ______
29 − 10 = ______
31 + 10 = ______
30 − 10 = ______
73 − 10 = ______
76 − 10 = ______
