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
23 − 10 = ______
43 − 10 = ______
39 + 20 = ______
7 × 10 = ______
39 + 10 = ______
39 − 10 = ______
12 + 10 = ______
26 + 20 = ______
70 + 20 = ______
9 × 10 = ______
53 + 20 = ______
55 + 10 = ______
51 − 10 = ______
52 + 10 = ______
4 × 10 = ______
36 + 10 = ______
23 + 10 = ______
3 × 10 = ______
27 − 10 = ______
22 + 20 = ______
