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
32 − 10 = ______
9 × 10 = ______
15 + 20 = ______
22 + 10 = ______
27 + 20 = ______
87 + 20 = ______
14 + 10 = ______
93 − 10 = ______
36 + 10 = ______
90 − 10 = ______
29 + 20 = ______
72 + 20 = ______
7 × 10 = ______
45 − 10 = ______
6 × 10 = ______
1 × 10 = ______
83 − 10 = ______
39 + 10 = ______
49 + 20 = ______
23 + 20 = ______
