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
13 + 10 = ______
17 + 20 = ______
45 + 20 = ______
73 + 10 = ______
34 − 10 = ______
17 + 10 = ______
36 + 10 = ______
41 + 10 = ______
29 + 20 = ______
7 × 10 = ______
3 × 10 = ______
83 + 20 = ______
72 + 20 = ______
1 × 10 = ______
79 − 10 = ______
36 − 10 = ______
18 + 10 = ______
92 − 10 = ______
43 − 10 = ______
2 × 10 = ______
