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
27 − 10 = ______
26 − 10 = ______
49 + 20 = ______
39 − 10 = ______
3 × 10 = ______
35 + 10 = ______
89 + 10 = ______
12 + 10 = ______
30 + 20 = ______
9 × 10 = ______
30 − 10 = ______
29 − 10 = ______
39 + 20 = ______
7 × 10 = ______
14 + 10 = ______
65 − 10 = ______
43 + 20 = ______
41 + 10 = ______
1 × 10 = ______
84 + 20 = ______
