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
24 + 10 = ______
72 + 10 = ______
40 + 20 = ______
22 + 20 = ______
66 − 10 = ______
89 − 10 = ______
2 × 10 = ______
1 × 10 = ______
25 − 10 = ______
41 − 10 = ______
16 + 10 = ______
75 + 20 = ______
8 × 10 = ______
9 × 10 = ______
18 + 20 = ______
79 + 20 = ______
4 × 10 = ______
87 + 20 = ______
29 + 10 = ______
50 + 10 = ______
